--- title: Neurosteroids (allopregnanolone): 162 studies, explained | Niyora description: 162 studies on neurosteroids (allopregnanolone) and PMS or PMDD, each summarised in plain English: what was tested, who took part, what they found and what it url: https://niyora.com/research/topics/treatment-neurosteroids/ --- - [Niyora](https://niyora.com/) - [Research](https://niyora.com/research/) - [Library](https://niyora.com/research/library/) - Neurosteroids (allopregnanolone) # Neurosteroids (allopregnanolone): what the research says 162 studies on neurosteroids (allopregnanolone) in PMS and PMDD, each explained in plain English. 11 of them use the strongest designs: randomised trials and systematic reviews. Survey study 35 Review 32 Case-control study 25 Randomised trial 25 Lab study 19 Study 9 Review, 2026 How well do SSRIs treat PMS? SSRIs like sertraline and fluoxetine are first-line treatments for severe PMS. They work at low doses, are safe with few side effects, and reduce symptoms by affecting serotonin and brain chemistry related to mood. Systematic review, 2026 Why do some women experience mood changes linked to their menstrual cycle? Evidence shows these women have normal hormone levels but heightened sensitivity in their brains and cells to hormone changes. This explains PMDD and some postpartum and perimenopausal mood problems, and has led to new treatments. Case-control study, 2024 Do steroid hormone levels change differently across the menstrual cycle in women with PMDD? Yes. Progesterone rises earlier in the cycle in women with PMDD, leading to higher levels around ovulation and a sharper drop in the late luteal phase. This different pattern may trigger symptoms. Systematic review, 2022 Does the stress hormone cortisol change across the menstrual cycle? Yes, but only slightly. Across many studies, cortisol was a little higher in the first half of the cycle (follicular phase) than the second half (luteal phase), and higher during a period than right before it, but most other phase comparisons showed no clear difference. Systematic review, 2022 Is taking antidepressants only at certain times as effective as taking them every day for PMS? Yes. Intermittent dosing works just as well as taking them every day, with effects starting within hours and peaking within 2 days. Survey study, 2022 What causes PMS and PMDD and what new treatments are being studied? PMS and PMDD involve changes in hormone sensitivity, serotonin levels, genetic factors, and inflammation. New treatments under research target progesterone receptors and inflammatory pathways. Randomised trial, 2022 Do herbal medicines and nutritional supplements help relieve PMS symptoms? Yes. A review of 25 high-quality studies with 1949 participants found that herbs and supplements with antioxidant and anti-inflammatory properties can effectively relieve PMS symptoms. More research is needed to confirm how well they work. Systematic review, 2021 Are there hormone changes that could explain PMDD or depression in women? Yes, women with PMDD have lower estrogen levels during the luteal phase of their cycle, and women with depression have lower testosterone levels. These hormonal differences may contribute to their symptoms. Review, 2017 What causes PMDD and what are the best treatments? PMDD involves an abnormal response to normal hormone changes affecting the serotonin system and brain circuits that control emotion. SSRIs are the first-line treatment, with several other options available. Review, 2003 How do menstrual cycle hormones affect the brain and cause mood disorders like PMDD? A hormone called allopregnanolone acts on brain receptors. Changes in this hormone during the cycle may cause mood and behavioral symptoms in up to 20% of people through three mechanisms: direct effects, building tolerance, and withdrawal effects. Randomised trial, 2002 Are SSRIs the best treatment for PMDD? Yes, SSRIs are very effective for PMDD. All studies of fluoxetine, sertraline, paroxetine, and citalopram reported positive results, making SSRIs the emerging gold standard treatment. Cohort study, 2026 How do menstrual cycle hormones affect suicide risk in women? A review suggests hormone changes during the menstrual cycle, especially in the luteal phase, may affect brain chemistry and increase suicide risk in vulnerable women. The exact mechanisms are not fully understood. Study, 2026 What treatments work for PMDD? SSRIs (a type of antidepressant) and certain types of birth control are the main first-line treatments. New treatments targeting brain chemistry are being developed. Review, 2025 How do hormone changes across the menstrual cycle affect mood and behavior in psychiatric disorders? This review proposes that fluctuations in estradiol and progesterone trigger different patterns of mood and behavior problems at different cycle phases through different biological mechanisms. Understanding individual differences in hormone sensitivity could help develop more precise treatments. Study, 2025 Can blood markers that predict depression after childbirth also predict PMDD? A blood marker linked to depression after childbirth also showed promise in identifying women with PMDD, particularly during the luteal phase of the menstrual cycle. Cohort study, 2025 Do women with epilepsy show different brain patterns during different phases of their menstrual cycle? Yes. Women with epilepsy showed abnormal changes in brain activity during the perimenstrual phase compared to women without epilepsy, suggesting increased brain excitation during this time. Review, 2025 How does the menstrual cycle affect ADHD symptoms and concentration? Women with ADHD experience worse attention and executive function during the mid-luteal and premenstrual phases, whereas women without ADHD show improved attention during these phases. Research is still limited. Review, 2025 What do menstrually-related mood disorders and postpartum depression have in common? They share similar symptoms like anxiety, irritability, and depressed mood. They may be caused by similar hormone changes and stress effects on the brain, but more research is needed to understand all the factors involved. Non-randomised trial, 2025 What treatments help PMS and PMDD? Both medications (SSRIs, hormonal therapy) and non-drug approaches (therapy, mindfulness, supplements, herbal medicine) show promise for PMS and PMDD. More research is needed to know which works best for whom. Review, 2025 What causes PMDD and why is it hard to function? PMDD is caused by the brain being too sensitive to hormonal changes. It leads to real and significant difficulty with work, school, or relationships that doctors often overlook. Case-control study, 2025 Is PMDD related to changes in a brain receptor gene during the menstrual cycle? Women with PMDD show lower levels of a specific receptor gene (delta GABA subunit) during their symptomatic luteal phase. This lower expression is linked to increased activity in the brain region that controls emotion. Randomised trial, 2024 Does sertraline change brain chemicals in people with PMDD, and does this relate to symptom improvement? Sertraline changed specific brain chemical levels (pregnanolone) in people with PMDD compared to baseline. However, whether these chemical changes directly caused symptom improvement was not tested. Randomised trial, 2023 Does estrogen and progesterone around the period help with suicidal thoughts? In 26 women with suicidal thoughts, giving estrogen and progesterone before the period changed some brain chemicals that may relate to suicide risk. This is very early research with a small sample, so we cannot be sure yet. Randomised trial, 2023 Do very low doses of fluoxetine help emotional PMS symptoms? Yes. Low doses of fluoxetine (5 to 10 mg daily) reduced emotional PMS symptoms when taken only before menstruation, with 10 mg being more effective. Survey study, 2022 How can animal models help us understand and treat PMDD? This review discusses how animal models are used to study PMDD. It concludes that PMDD is complex and involves multiple hormone systems, and effective animal models must capture this complexity to develop new treatments. Case-control study, 2022 Are differences in emotional brain activity in women with PMDD related to progesterone-derived neurosteroids? Women with PMDD show greater emotional brain activity during the late luteal phase, and this activity is related to a different balance of two neurosteroids (ALLO and ISO) compared to women without PMDD. Randomised trial, 2022 What research topics and methods have scientists focused on when studying PMS and PMDD? Scientists have focused research on PMS and PMDD primarily through double-blind medication trials, with recent trends shifting toward understanding steroid hormone pathways and genetic factors. Randomised trial, 2021 Does sepranolone reduce PMDD symptoms? Sepranolone showed benefit for PMDD distress compared to placebo, but the main overall symptom score was not significantly different from placebo in the primary analysis. A follow-up analysis using a longer symptom window showed sepranolone 10 mg was significantly better. Randomised trial, 2021 Does blocking progesterone receptors help women with PMDD control anger and aggression? Yes, according to this study. Women taking the medication had a 93% response rate compared with 53.3% on placebo, and their brains showed stronger activity in emotion control regions. Randomised trial, 2021 Does electroacupuncture reduce PMS symptoms? Yes. Electroacupuncture significantly reduced PMS symptoms compared to placebo acupuncture, and it changed several hormone and brain chemical levels. Randomised trial, 2021 Does ulipristal acetate help premenstrual dysphoric disorder? Yes. After 3 months, women taking ulipristal acetate had 41% improvement in symptoms versus 22% with placebo, and 50% achieved full remission versus 21% with placebo. Review, 2020 Does progesterone help or harm women's mood? It depends on the condition. Progesterone's metabolite allopregnanolone helps postpartum depression but may trigger negative symptoms in women with PMS and PMDD. More research is needed. Randomised trial, 2020 Do steroid metabolites differ between women with PMDD and those without? Yes. Women with PMDD show different patterns of certain steroid metabolites, particularly sulfated forms, which may relate to how their bodies process hormones. Review, 2019 Which contraceptive methods are safest for women with PMDD? Combined hormonal pills (especially 20 mcg ethinyl estradiol with 3 mg drospirenone) and copper IUDs help PMDD symptoms. Progestin-only methods may worsen mood and need careful monitoring. Randomised trial, 2017 Do hormones process differently in women with PMDD? Women with PMDD process certain sulfated steroid hormones differently than others, especially estradiol and DHEA metabolites. The study was very small and tested only women who were known to be hormone-sensitive, so the findings may not apply to all PMDD. Randomised trial, 2017 Does Sepranolone reduce symptoms of severe premenstrual syndrome (PMDD)? Yes, Sepranolone reduced PMDD symptoms significantly more than placebo, with severe symptom scores dropping by 75% compared to 47% for placebo in women who completed treatment correctly. However, implementation challenges limit confidence in the results. Review, 2015 Does a progesterone metabolite called allopregnanolone cause mood problems in PMDD? In some women with PMDD, the progesterone metabolite allopregnanolone is linked to negative mood during the luteal phase, despite being expected to be calming. A preliminary clinical trial of a blocking agent called isoallopregnanolone showed good effects in treating PMDD symptoms. Case-control study, 2015 Does lamotrigine reduce menstrual cycle-related mood changes in women with bipolar disorder? Women with treated bipolar disorder showed greater mood and sleep changes across the menstrual cycle compared to healthy women. Women taking lamotrigine had less mood fluctuation and were more similar to healthy women than those not taking lamotrigine. Review, 2015 What causes PMDD? A review suggests that neurosteroids and stress may be key contributors to PMDD. PMDD is characterized by cognitive-affective symptoms in the premenstrual phase and is distinct from other mood disorders. More research is needed to confirm these mechanisms. Case-control study, 2013 Are stress hormones different in women with PMDD? Overall stress hormone patterns are similar in PMDD and healthy women, but those with high allopregnanolone (a progesterone derivative) show blunted nighttime cortisol levels. Non-randomised trial, 2013 Does menstrual cycle phase affect protective hormones during smoking cessation? Yes. Allopregnanolone (a hormone related to progesterone) decreased by 10% during smoking cessation in the follicular phase but increased by 31% in the luteal phase, which may explain why the luteal phase is better for quitting smoking. Review, 2010 Can neurosteroids help with anxiety and brain disorders? The review suggests neurosteroids might help with anxiety, epilepsy, and depression, but clinical evidence is limited. Review, 2006 How do brain hormones affect PMDD and mood problems during the menstrual cycle? Probably yes. Brain hormones that change during the menstrual cycle may trigger mood problems in PMDD by working similarly to anti-anxiety drugs. PMDD affects 2-6% of reproductive women. Randomised trial, 2006 Do women with PMDD and depression process progesterone differently than others? Yes. Women with prior depression convert progesterone to its active form less efficiently. Women with PMDD and no depression history show unusual patterns of this conversion, suggesting altered metabolic pathways. Cohort study, 2006 Does having depression in the past affect stress hormone responses in women with PMDD? Yes. Women with a history of depression showed reduced stress hormone responses, and this was linked to more severe premenstrual symptoms specifically in women with PMDD and depression history. Randomised trial, 2005 Does a low dose of alcohol change allopregnanolone, a brain chemical linked to PMDD? During the late cycle phase, a small dose of intravenous alcohol decreased allopregnanolone levels in both women with severe PMS and control women, but this did not happen during the early cycle phase. This is moderate evidence, but the study is small and used an unnatural way of giving alcohol. Case-control study, 2004 Do women with PMS have different hormone levels than women without PMS? Yes. Women with PMS have significantly lower allopregnanolone in the second half of their cycle, plus higher free testosterone and higher DHEA. These hormone differences may explain why they experience mood changes, anxiety, aggression, and irritability. Case-control study, 2003 Are progesterone-related brain molecules different in women with panic disorder? Women with panic disorder had higher levels of progesterone-related brain molecules during different phases of their menstrual cycle compared to healthy women. This suggests the brain may be overproducing these molecules. Review, 2003 What role do hormones play in PMS and how should we treat it? Female hormones trigger PMS by affecting brain chemistry, especially the serotonin and GABA systems. SSRIs and medications that stop ovulation are the most effective treatments. Randomised trial, 2002 Does the hormone allopregnanolone relate to how well antidepressants work for severe PMS? Women whose PMS improved on antidepressants had significantly lower allopregnanolone levels than those who didn't improve. This is preliminary evidence but suggests allopregnanolone may play a role in treatment response. Randomised trial, 2001 Do women with PMS have different brain receptors that change with hormones? No. Receptor density did not differ significantly between women with PMS and controls, and did not change when estradiol or progesterone were given. Case-control study, 2000 Do women with PMS have different hormone levels than women without PMS? Yes. Women with PMS have significantly lower levels of allopregnanolone and progesterone, especially during the second half of the menstrual cycle. Their bodies also showed a weaker response to a hormone stimulation test. Randomised trial, 1999 Does menstrual cycle phase affect how women respond to triazolam? No. The effects of triazolam on mood and performance were stable across all three phases of the menstrual cycle. Randomised trial, 1995 Do vaginal progesterone suppositories relieve PMS symptoms? Overall PMS scores were not significantly better with progesterone than placebo, but a specific group of 'nervous' symptoms, tension, mood swings, irritability, anxiety and lack of control, did improve significantly. Cohort study, 2026 Can one questionnaire help doctors tell the difference between PMS, PMDD, and other mood disorders? Researchers created a new questionnaire called COMPASS designed to help doctors distinguish PMS, PMDD, and perimenopause from conditions like depression, personality disorders, and trauma disorders that cause similar symptoms. Survey study, 2026 What causes PMS and how can we treat it? This is a review summarizing what is known about PMS. GABA and neurosteroid changes are suspected causes. Both medication and non-medication treatments exist and should be individually chosen. Survey study, 2026 Does PMS affect how well young women sleep? This study set out to check whether premenstrual syndrome is linked to poorer sleep in women aged 18 to 25, but the text available here only describes the background and methods, not the actual results, so no clear answer can be given from what is provided. Review, 2026 What causes PMDD? PMDD happens when the brain is too sensitive to hormonal changes during the menstrual cycle. Many brain systems are involved, but most of the mechanisms still need direct testing. Study, 2026 How do brain chemicals relate to PMDD and what treatments can help? PMDD affects 3% to 8% of menstruating people and involves a brain chemical imbalance. Several treatments work, including antidepressants, new specific medications, birth control pills, and some herbal remedies. Case-control study, 2026 What role do brain chemicals called neurosteroids play in PMDD? A key brain chemical called allopregnanolone likely triggers PMDD symptoms in vulnerable women. It acts as a sedative at high levels but can cause anxiety and irritability at lower levels in some people. Survey study, 2026 Does a brain chemical relate to depression that worsens before periods in women with major depression? Yes, during the premenstrual phase. Women with worse depression had lower levels of GABA (a brain chemical) in a specific brain region, but only when tested just before their period. Survey study, 2026 Is severe PMS associated with insomnia risk in working women? The study could not find a statistically significant link. However, women with severe PMS had nearly 5 times higher odds of insomnia, suggesting a real trend that needs further research. Randomised trial, 2026 How should PMS and PMDD be understood and treated differently based on how severe they are? PMS and PMDD are complex conditions needing personalized, stepped treatment. Start with lifestyle and behavioral changes, then add medication based on severity and individual response. Study, 2026 Could early stress or past trauma make PMDD symptoms worse later in the cycle? This research offers a possible explanation for why PMDD symptoms vary so much, and why related conditions can worsen before a period. It is only a theory, not tested on patients, so we don't yet know if it is true. Review, 2026 What causes PMDD and what treatments are available? PMDD seems to come from the body's abnormal response to hormone and brain-chemical shifts, shaped by genes, stress, immune function and opioid pathways. Several treatments exist, from SSRIs to surgery in severe cases, but this paper only summarises existing research, not a new trial. Lab study, 2025 How does Jingqianshu Granules help PMDD? This laboratory and animal study shows the medicine may work through changes in brain chemicals and reduction of brain inflammation. Results cannot yet be confirmed in women with PMDD. Survey study, 2025 How do hormone changes during the menstrual cycle affect mood and emotions? Estrogen and progesterone affect brain chemicals and structures that control mood, but scientists still cannot fully explain why some women experience severe symptoms like PMS or PMDD. Case-control study, 2025 Do certain hormone-related brain chemicals predict how bad premenstrual depression and anxiety will be? In this small study, women with a PMDD-like condition had higher levels of a calming hormone (allopregnanolone) early in the cycle, and higher levels of it predicted worse later depression and anxiety. The sample is small, so this is an early finding, not a proven cause. Survey study, 2025 Do brain chemistry genes shift across the menstrual cycle in women with mood changes? Yes, genes that control a brain chemical called GABA do change across the menstrual cycle in women with mood disorders. However, the relationship is complex: both unusually high and unusually low gene activity can be linked to worsening mood symptoms like anxiety and suicidal thoughts. Review, 2025 Could PMDD increase the risk of Alzheimer's disease later in life? Possibly, but this is unproven. PMDD and Alzheimer's may share biological problems in hormone levels, brain chemistry, and genes, but researchers have not yet shown PMDD causes Alzheimer's. Survey study, 2025 How do PMDD treatments affect sleep? This review examines how PMDD treatments like SSRIs affect sleep and circadian rhythms, but current research is limited. More research is needed to fully understand these effects. Survey study, 2025 Do zinc, copper, and magnesium help PMS? These minerals affect mood regulation and appear to work through similar pathways as PMS. However, the review does not provide clear evidence that supplements help PMS symptoms. Non-randomised trial, 2024 Does luteal phase sertraline treatment affect stress hormones and inflammation in PMDD? Sertraline during the luteal phase changed stress hormone levels in complex ways depending on other hormonal factors, but results were mixed and this exploratory study had no placebo control group. Review, 2024 What are premenstrual disorders and how should they be treated? Premenstrual disorders are common and can be as disabling as major depression, but they are often under-recognized and poorly treated. Women with severe forms need multidisciplinary care. Survey study, 2024 What causes PMS and which treatments actually help? This review suggests PMS is linked to changes in brain chemicals like GABA and the hormone-related substance allopregnanolone, and that several treatments (SSRIs, hormonal options, neurosteroids, supplements, therapy) can help, but no single treatment suits everyone. Survey study, 2024 Does a Chinese herbal medicine called ShuYu capsule help PMDD symptoms? In rats with PMDD-like symptoms, ShuYu capsules improved mood and reduced pain sensitivity. This is early animal research that hasn't been tested in women yet. Lab study, 2024 Can the natural compound rutin help with depression from PMDD? In laboratory studies with rats, rutin reduced depression symptoms, improved memory, and reduced brain cell damage. It is unknown whether rutin would help women with PMDD because this was not tested in people. Survey study, 2024 How are PMDD and sexual dysfunction connected? Women with PMDD often experience sexual problems during the premenstrual phase. Some medications treat PMDD and others treat sexual dysfunction, but it's not clear if they help both conditions together. Case-control study, 2023 Does allopregnanolone affect how women with PMDD respond to stress? Women with PMDD had a much larger drop in heart rate variability during stress than healthy women, and recovered more slowly. Baseline allopregnanolone levels predicted the heart response only in women with PMDD. Lab study, 2023 How does allopregnanolone help with PMDD symptoms? In rats with PMDD-like symptoms, allopregnanolone reduced anxiety and improved how brain receptors work in areas that control emotions. Case-control study, 2023 Do women with PMDD show different brain responses to emotions across the menstrual cycle? Women with PMDD show increased activity in emotion-processing brain areas during the late luteal phase compared to controls, and this activity is linked to the balance of allopregnanolone and isoallopregnanolone in different ways than in healthy women. Survey study, 2023 Could treatments that affect the brain's GABA system help PMDD? This review suggests GABA system changes may cause PMDD symptoms. Three compounds being tested in early clinical trials show promise, but much larger studies are needed to confirm if they work. Lab study, 2023 Can a chemical reduce aggressive behavior during the late phase of a cycle similar to the menstrual cycle? In a rat study, a chemical called isoallopregnanolone reduced aggressive behavior during the late cycle phase. The treatment brought aggression down to levels seen in the early phase of the cycle. Review, 2023 Does PMDD affect sexual function? There is a likely biological and psychological connection between PMDD and sexual dysfunction, but very few studies have examined this link. More research is needed. Lab study, 2023 How do brain receptors change in different types of PMDD? Rats with two different types of PMDD showed different changes in brain receptors and brain chemicals, suggesting PMDD might have different forms. Survey study, 2023 How do hormone changes affect brain chemistry in PMDD? This review article proposes that PMDD occurs when the hormone allopregnanolone drops during the luteal phase, reducing sensitivity of brain receptors that normally calm activity. Targeting these receptors could be a strategy for treating PMDD. Lab study, 2023 Does Shuyu Capsule help with premenstrual depression? In laboratory studies with rats, Shuyu Capsule reduced depression symptoms by working through the progesterone-allopregnanolone-GABA pathway in the brain. It is not known whether this would help women with premenstrual depression. Randomised trial, 2023 Does a smartphone app for heart rate variability biofeedback reduce premenstrual and depressive symptoms? Yes, the app reduced premenstrual, depressive, and stress symptoms over 4 weeks. However, it did not change the underlying heart rate patterns it was designed to improve. Lab study, 2023 Does menstrual cycle phase affect anxiety differently after becoming a mother? Menstrual cycle phase changed anxiety in women without children but made no difference in mothers. Motherhood appears to reduce how hormones affect anxiety. Cohort study, 2023 What medications and supplements treat PMDD? SSRIs are the first-line medication. Combined oral contraceptives and Chasteberry are second-line options. Certainty varies by treatment type. Survey study, 2023 What causes PMDD? PMDD involves progesterone and brain chemistry. When progesterone converts to a substance called allopregnanolone in the brain, it affects how GABA receptors (brain cells that create calming signals) respond, which may trigger PMDD. Survey study, 2022 Is brain visual processing different in people with PMDD? Yes. Women with PMDD showed abnormal patterns in how their visual brain responded to stimuli, especially during the luteal phase, suggesting an imbalance between brain excitation and inhibition. Survey study, 2022 What causes PMDD symptoms and how can they be treated? Low progesterone is linked to PMDD symptoms. A medication called allopregnanolone and certain foods may help reduce symptoms. Lab study, 2022 What happens to PMDD symptoms when a specific brain gene is removed? Mice without a certain brain receptor gene showed some PMDD-like symptoms in memory and social behavior but had opposite changes in anxiety and pain, and did not respond to allopregnanolone. Review, 2022 Can blocking a natural brain steroid help PMDD? Maybe. An early study showed that blocking a steroid called allopregnanolone improved negative mood in women with PMDD compared with placebo, but more research is needed. Study, 2022 Why do women get PMS and PMDD? PMS and PMDD happen because the brain responds very sensitively to normal changes in estrogen and progesterone during the menstrual cycle. Several brain systems control mood and are affected. Lab study, 2021 Does a Japanese herbal medicine help reduce anxiety before a period? An ethanol extract of a Japanese herbal medicine called Inochinohaha White reduced anxiety-like behavior in rats when hormone levels dropped sharply, suggesting it might help premenstrual anxiety. This was an animal study. Case-control study, 2021 Do women with PMS have different cortisol levels and patterns? Women with PMS may have higher stress-related cortisol levels and delayed patterns. Many studies are small with limited power, so conclusions are tentative. Lab study, 2020 Can researchers create an animal model that shows depression linked to the menstrual cycle? Researchers created a rat model showing depression-like behavior during the non-receptive phase of the cycle (like the luteal phase in women) and reverse it with fluoxetine, suggesting hormonal changes cause premenstrual depression. Case-control study, 2020 Are certain genetic variations in the GABRB2 gene associated with PMDD? Yes. Specific copy number gains in the GABRB2 gene are significantly more common in women with PMDD, with a roughly 10-fold increased risk in Chinese women and a 2.4-fold increase at another location. Review, 2020 Do hormonal contraceptives cause depression? The link between hormonal contraceptives and depression is still debated. Women with a history of mood disorders or PMDD are at higher risk of mood effects, and adolescence appears to be a critical vulnerable period. Survey study, 2020 Does the ability to move eyes quickly change across the menstrual cycle? Yes. Eye movements were significantly slower during the luteal phase (the second half of the cycle) compared to the follicular phase (the first half). This suggests hormone changes affect brain chemistry linked to mood disorders. Survey study, 2019 Does allopregnanolone, a hormone made from progesterone, affect premenstrual mood? Growing evidence suggests allopregnanolone may influence mood during the premenstrual phase and other reproductive times, but exactly how it works is not yet clear. Survey study, 2019 Why might depression develop when women stop breastfeeding? This review proposes that hormonal changes during weaning may trigger depression in some women. A brain chemical normally calming anxiety may work differently during weaning, worsening mood instead. Review, 2019 What causes PMDD and which treatments actually help? This review explains that PMDD likely comes from an unusual brain response to normal hormone changes, involving serotonin and a brain receptor called GABA-A, and it says serotonin reuptake inhibitors (SSRIs) are the first choice of treatment, with other options available if those do not work. Randomised trial, 2018 How do progesterone metabolites affect PMDD symptoms? Women with PMDD respond differently to these natural brain chemicals. Blocking one type may reduce negative mood symptoms, but this summary is incomplete. Survey study, 2018 How do women respond differently to psychiatric medications and why do we need sex-specific treatments? Women respond differently to psychiatric medications than men because of biological differences in brain receptors and hormones. Sex-specific treatments are important for conditions like PMDD and postpartum depression. Review, 2018 Can acoustic startle response help us understand how hormones affect PMDD? Possibly. Two types of acoustic startle response tests may help scientists understand how hormones affect PMDD, but most studies have not yet properly tested this. Randomised trial, 2016 Does blocking progesterone conversion help PMDD symptoms? A high dose of dutasteride reduced several PMDD symptoms by blocking conversion of progesterone to a hormone compound. However, only the high dose worked and the study was small. Case-control study, 2016 Do women with PMDD respond differently to allopregnanolone across the menstrual cycle? Yes, women with PMDD show an opposite pattern of brain response to injected allopregnanolone across the cycle compared to healthy women, with stronger effects in the luteal phase, suggesting altered sensitivity to this hormone. Survey study, 2015 Does changing hormones during menopause cause depression? Changing hormones during menopause may disrupt the body's stress-management system, making depression more likely. This is a theory based on reviewing research, not new evidence from testing. Review, 2015 What causes premenstrual syndrome and what is the best treatment? PMS is triggered by progesterone changes after ovulation, though the exact cause is not fully understood. Antidepressants called selective serotonin reuptake inhibitors are the most effective and recommended first-line treatment. Survey study, 2014 Does allopregnanolone, a progesterone metabolite, cause mood problems in PMDD? Theory suggests it might. In women with PMDD, allopregnanolone levels increase during the menstrual cycle and appear linked to mood changes. Paradoxically, this brain chemical normally calms the brain. Survey study, 2014 Does allopregnanolone cause mood problems in premenstrual dysphoria and postpartum depression? It may trigger mood problems in susceptible women, but the research is preliminary. There is no clear evidence that allopregnanolone levels differ between those with and without these conditions. Lab study, 2014 How do changes in brain chemistry during the menstrual cycle affect memory and thinking? In mice, certain brain receptors change levels during the ovarian cycle, affecting brain wave patterns in a way that may explain memory and thinking problems in women with PMS or PMDD. Lab study, 2014 Does the hormone drop around the menstrual period change the brain's response to a calming chemical? In mice, mimicking the hormone drop around the period changed a brain receptor part and made brain cells more sensitive to a calming hormone, affecting seizure risk. This is a mouse study, so it may not work the same way in women. Case-control study, 2014 Are hormone and nerve chemical patterns different in different types of PMS? Women with two different types of PMS had different patterns of brain hormones and chemicals, particularly ones linked to anger and depression. The patterns could partly explain why symptoms differ between women. Review, 2014 Why do some women get mood problems during their menstrual cycle and after having a baby? According to laboratory research, women's brains change how they regulate a calming brain chemical during hormonal changes. When the brain cannot adapt properly, mood disorders like PMS, PMDD, and postpartum depression may develop. Survey study, 2013 What role do neurosteroids play in women's health? Neurosteroids are chemicals in the brain and nervous system that control how nerve cells work. They may be useful for treating health issues related to aging and reproductive hormones. Lab study, 2013 Could antidepressants help prevent PMS by keeping brain chemicals stable? This is a theory based on how antidepressants work and animal research, but it has not yet been tested in women. Survey study, 2012 How do changes in brain chemicals during your cycle affect seizures? This lab study in mice found that a brain chemical that normally decreases before your period protects against seizures. When it drops, seizures become more likely. Case-control study, 2012 Do women with anger and depression types of premenstrual syndrome have different brain chemicals? Yes. Women with these PMS types had significantly lower calming brain chemicals (allopregnanolone and pregnenolone) and significantly higher stress hormones (adrenaline and noradrenaline) during the luteal phase compared to healthy women. Review, 2012 What causes PMS and PMDD? PMS and PMDD are triggered by hormonal changes after ovulation, but not by abnormal hormone levels. The brain's calming system (GABA) and mood system (serotonin) are both affected by progesterone changes. Case-control study, 2012 Could genes explain why some women have severe PMS? Possibly. A genetic variant was more common in women without severe PMS, suggesting it may protect against severe symptoms, but this pilot study was very small. Lab study, 2011 Are certain brain-affecting hormones linked to mood changes during the menstrual cycle? Yes. A specific type of hormone (7-hydroxylated metabolites of dehydroepiandrosterone) is significantly lower during the high-hormone luteal phase, which may be linked to mood and thinking changes that happen during this phase. Survey study, 2011 Why do women get panic disorder more often than men? This review proposes that women with anxiety sensitivity may be more vulnerable to panic disorder because progesterone and its brain chemical allopregnanolone interact differently during the premenstrual phase. The evidence is preliminary. Review, 2011 How do the hormones estrogen and progesterone affect the brain's activity, and could this explain PMS or PMDD? Estrogen tends to make brain cells more excitable, while progesterone and a substance it breaks down into tend to calm them. This balance may help explain PMS and PMDD, but this is a summary of existing research, not a new experiment. Survey study, 2011 Why do some women experience negative mood with hormone changes? The paper proposes that negative mood in PMDD may result from how a brain chemical reacts to receptors. This is a theoretical explanation based on research patterns, not a definitive finding from a new study. Survey study, 2010 Do women in different menstrual phases respond to stress differently than men? Yes. Men showed stronger hormonal stress responses than women. However, women in the luteal phase reported feeling more stressed and showed greater emotional stress hormone responses than women in the follicular phase. Non-randomised trial, 2010 Does the menstrual cycle change how the brain responds to stress? Yes. In the late luteal phase (before your period), stress affected brain emotion regions differently than in other cycle phases, with unexpected lower response in the late luteal phase. Women with higher natural hormone changes showed smaller brain responses to stress. Randomised trial, 2009 Does a hormone called allopregnanolone calm the body's startle reaction in PMDD? No. Giving this hormone by injection made women feel more sedated but did not change their physical startle response, in either women with PMDD or healthy women. Lab study, 2009 Does a stress-reducing hormone work differently at puberty? Yes. In female mice, pregnanolone (a hormone that normally reduces anxiety) actually increases anxiety at puberty because the brain develops new receptors that respond to it differently. Survey study, 2009 Why do some women feel depressed or anxious when progesterone increases before their period? A literature review suggests progesterone is converted to chemicals that affect the brain's GABA system. At levels before the period, these chemicals paradoxically cause anxiety instead of calming it. Women with PMDD have changes in their GABA system that make them more sensitive. Lab study, 2008 Does progesterone withdrawal affect anxiety in female brains? When progesterone levels drop, specific changes happen in a brain region involved in anxiety. This research is in rats, not humans, so we do not know if the findings apply to women. Study, 2008 How common is PMDD and how does it affect women's lives? About 5% of menstruating women have severe PMDD with significant impairment in functioning. At least another 20% have clinically significant premenstrual symptoms. PMDD affects romantic relationships, parenting, work, and increases health care use. Case-control study, 2008 Do women with seizures that worsen around their period have different hormone levels? Yes. Women whose seizures get worse before their period have lower THDOC levels and a lower DHEAS/cortisol ratio throughout their cycle (p < 0.05), which might explain their worsening seizures. Survey study, 2008 Do hormone changes during the premenstrual phase relate to mood symptoms in women with mood disorders? In women with bipolar disorder and major depression, progesterone and allopregnanolone levels during the premenstrual phase are linked to mixed mood features and suicidal ideas, particularly in those with bipolar disorder. We cannot be certain because the study is very small. Interview study, 2008 How do hormones change the brain in PMDD and menstrual-related seizures? Sex hormones like estrogen and progesterone affect brain chemicals that control mood and seizure activity. These effects may explain why both PMDD and menstrual-related seizures worsen around the menstrual cycle, suggesting similar treatments might help both conditions. Randomised trial, 2007 Is a brain hormone called allopregnanolone linked to how PMS symptoms improve with treatment? Possibly yes: in this very small study, women whose PMS symptoms improved, whether on real treatment or placebo, also had a drop in allopregnanolone levels. But with only 6 women per group, this is far from proven. Study, 2007 What is catamenial epilepsy and how can it be treated? Catamenial epilepsy is when seizures cluster around specific times in the menstrual cycle, affecting at least one in three women with epilepsy. Progesterone or neurosteroid drugs may help. Survey study, 2006 Could hormone-driven changes in brain chemistry explain mood problems during the menstrual cycle? This is a proposed explanation, not proven by research. The authors suggest that changes in specific brain-made chemicals called neurosteroids, triggered by shifting estrogen levels during the menstrual cycle, might cause depression and other mood problems. Survey study, 2006 Do oral contraceptives improve mood in women with premenstrual dysphoric disorder? This theoretical review proposes that birth control pills affect mood by changing brain chemicals called neurosteroids, but researchers still disagree on whether the pills improve or worsen mood in PMDD. Review, 2006 Could changes in brain receptors explain premenstrual anxiety? Possibly, based on animal studies. When progesterone drops (like before a period), rat brains show changes in GABA receptors in regions that control panic and anxiety, though whether this happens in women's brains is unknown. Lab study, 2006 Can a hormone that usually reduces anxiety instead cause anxiety after your body adapts to its being blocked? Yes. When a hormone precursor was blocked, the hormone THP (which normally calms anxiety) instead increased anxiety in female mice. This effect involved changes to specific brain receptors. Review, 2006 Do hormone-related brain chemicals explain why some women develop mood disorders? Possibly. Natural steroid hormones in the brain, like allopregnanolone, seem to affect GABA, the brain's main calming chemical, and this interaction may contribute to mood and substance use disorders in women, according to a review of lab and clinical research. Lab study, 2005 How do changes in brain chemistry during the menstrual cycle affect anxiety and seizures? During the high-progesterone phase of the cycle, specific brain chemicals increase the brain's ability to calm down, which reduces seizure risk and anxiety. Some women with PMDD or epilepsy may not have normal cycling of these chemicals, which could explain their symptoms. Review, 2004 Could a brain hormone called allopregnanolone explain mood problems like PMDD in women? This review suggests that changes in allopregnanolone, a hormone-like substance in the brain, may be linked to mood problems including premenstrual dysphoria (PMDD), but this is a theory based on existing animal and human research, not new proof. Case-control study, 2003 Does the brain respond differently to progesterone in women with PMS? Yes. Women with PMS showed abnormal brain responses during the luteal phase, opposite to what happens in women without PMS. This is the first evidence for abnormal brain response to progesterone in PMS. Case-control study, 2002 Does brain GABA change differently in women with PMDD during the menstrual cycle? Yes. GABA levels dropped across the cycle in healthy women but rose in women with PMDD. This is a very small study, so results need confirmation. Cohort study, 2001 Do women with PMDD handle stress hormones differently than women without it? Yes. In this small study, women with PMDD showed different patterns of the hormone allopregnanolone and cortisol around stress compared to women without PMDD, hinting at a biological difference in how their bodies respond to stress. Case-control study, 2001 Do women with PMS respond differently to a serotonin challenge than healthy women? Yes. When given an intravenous tryptophan challenge, women with PMS showed a much larger increase in allopregnanolone than healthy women. This suggests a possible interaction between serotonin and brain hormones in women with PMS. However, the study was very small. Lab study, 2001 Does withdrawal of a progesterone metabolite increase seizure risk around menstruation? In rats, withdrawal of allopregnanolone (a progesterone metabolite) increased how easily seizures happen, supporting the theory that this withdrawal contributes to increased seizures during menstruation in women with epilepsy. Review, 2001 How do hormone changes during the menstrual cycle affect brain function? Hormones that fluctuate with the menstrual cycle, such as allopregnanolone, can enhance or suppress brain activity by changing how a key inhibitory neurotransmitter (GABA) works. This is a review explaining theory, not new research. Survey study, 2000 Why do women get more anxious when hormone levels drop? Falling estrogen and progesterone levels may trigger anxiety and mood disorders by affecting how brain receptors that control anxiety and mood work. The exact mechanism is not yet fully understood. Study, 2000 Are physical PMS symptoms linked to progesterone and other hormones? Symptoms peaked 1-3 days before menstruation, delayed 3-6 days after hormone peaks. Progesterone was more linked to symptoms than desoxycorticosterone. Case-control study, 1999 Does pregnanolone affect hormones differently in women with PMS vs without? No. Pregnanolone changed progesterone levels in the same way in both groups, and women with PMS did not react differently from women without PMS. Study, 1999 What causes PMS and how should different symptoms be treated? PMS involves hormone problems and disruptions in brain chemical systems (GABA, serotonin, endorphins). Different symptoms may respond to different treatments: mood symptoms to medication, physical symptoms to progesterone or diuretics. Case-control study, 1998 Are hormone levels different in women with PMS? Yes, women with PMS had significantly lower progesterone and allopregnanolone levels during the follicular phase of their cycle compared to controls. Review, 1998 What are neurosteroids and how do they work in the brain? Neurosteroids are hormones made in the brain that affect brain function through a special mechanism and are important in both normal and abnormal brain conditions. Non-randomised trial, 1997 Do women with PMS respond differently to sedatives than women without PMS? Yes, women with PMS had reduced sensitivity to benzodiazepines throughout their menstrual cycle compared to controls, with effects most noticeable in the luteal phase. This is a small uncontrolled study, so we cannot be fully certain of these results. Case-control study, 1997 Is a specific progesterone hormone lower in women with PMS? Yes. Women with PMS had lower levels of allopregnanolone (a calming hormone made from progesterone) in the luteal phase compared to women without PMS. Non-randomised trial, 1994 Are progesterone and its related hormones different in women with PMS? No. Hormone levels were the same in women with PMS and healthy women. Symptom severity did not depend on these hormone levels. Show more studies Ask AI about this page Copy prompt ChatGPT ↗ Claude ↗ Perplexity ↗ Google AI Mode ↗ Grok ↗