--- title: Genetics and heritability: 106 studies, explained | Niyora description: 106 studies on genetics and heritability and PMS or PMDD, each summarised in plain English: what was tested, who took part, what they found and what it means. url: https://niyora.com/research/topics/method-genetics/ --- - [Niyora](https://niyora.com/) - [Research](https://niyora.com/research/) - [Library](https://niyora.com/research/library/) - Genetics and heritability # Genetics and heritability: what the research says 106 studies on genetics and heritability in PMS and PMDD, each explained in plain English. 8 of them use the strongest designs: randomised trials and systematic reviews. Survey study 35 Case-control study 19 Cohort study 17 Study 11 Randomised trial 7 Lab study 6 Cohort study, 2026 What genetic factors are linked to premenstrual symptoms? One genetic location on chromosome 12 was clearly associated with PMS. The genetic factors linked to PMS are also linked to depression. 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. Cohort study, 2026 Do premenstrual disorder and postpartum depression share the same genetic causes? Yes. The conditions share significant genetic overlap with genetic correlation of 0.47 to 0.66. Two genetic locations were identified that affect both disorders, both involving brain response to hormones. Survey study, 2025 Is premenstrual syndrome inherited from your family? A study found that genes play a small role in who gets PMS symptoms. One genetic change was linked to PMS, and this same genetic pattern is also linked to depression. Cohort study, 2023 Are PMS symptoms linked to genetic factors for psychiatric disorders? Yes. Women with PMS were more likely to have genetic factors for depression, bipolar disorder, ADHD, schizophrenia, and autism spectrum disorder. This was a large, well-designed study, so we can be confident in these findings. 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. Systematic review, 2022 What increases the risk of depression after childbirth? Premenstrual syndrome is the strongest known risk factor for postpartum depression, nearly doubling the risk. Violent experiences and unintended pregnancy are also strong risk factors. Randomised trial, 2016 Does telcagepant prevent migraines during the menstrual period? Telcagepant did not reduce overall monthly migraine days. However, it did reduce headaches on the days it was taken around the period. It was generally safe. Cohort study, 2026 Is genetic predisposition to immune cell changes linked to premenstrual disorders and their severity? Possibly. A genetic tendency toward higher white blood cell counts showed a weak association with worse physical PMS symptoms, especially in women whose symptoms started at their first period (p=0.008). However, the connection was not consistent across all markers and needs to be repeated. Survey study, 2026 Are PMDD and ADHD linked in women with bipolar disorder? In women with bipolar disorder, 44.2% have PMDD, and those with PMDD also have higher ADHD symptom scores. Genetic risk for ADHD was linked to both PMDD severity and ADHD symptoms. Cohort study, 2026 Which established risk factors genetically cause premenstrual disorder? Genetic analysis suggests three factors cause premenstrual disorder: earlier age at first period, higher BMI, and smoking. However, when tested in a smaller group, results were not consistent, so more research is needed to be sure. 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. Survey study, 2026 Are women who feel mood changes from birth control pills at higher risk for PMDD and postpartum depression? Yes. Women who reported mood problems from the pill were 3.78 times more likely to have PMDD and 1.66 times more likely to have depression after childbirth, though genetic factors and depression history also matter. Review, 2026 Do PMDD, postpartum depression and perimenopausal depression have the same genetic causes? It's unclear. Researchers have looked at several of the same genes in all three conditions but found inconsistent results. Most genetic research has focused on postpartum depression, not PMDD. Non-randomised trial, 2025 Do common migraine prevention drugs work as well for migraines around your period as other migraines? No. Two preventive drugs, anti-CGRP antibodies and botulinum toxin, significantly reduced regular migraines but had limited effect on perimenstrual migraines (those around the time of your period). This suggests perimenstrual migraine may need different treatment. 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. 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. Survey study, 2024 What do we know about how PMS develops, its symptoms, diagnosis, and treatment? This review summarizes current knowledge about what causes PMS, what symptoms appear, how doctors diagnose it, and what treatments work. Randomised trial, 2024 What causes PMS and PMDD and how are they treated? PMS and PMDD happen when hormone changes interact with brain chemicals during the menstrual cycle. Treatments include birth control pills, progesterone, SSRIs (a type of antidepressant), and hormone injections for severe cases, though some treatments still need proof from rigorous trials. Cohort study, 2023 Do girls with intellectual disability have worse menstrual quality of life? Girls with intellectual disability had similar menstrual patterns to other girls, but experienced significantly lower quality of life during menstruation and missed much more school due to periods. Randomised trial, 2023 Does the migraine drug ubrogepant work differently for period migraines than other migraines? No. In 734 women, ubrogepant worked about the same whether the migraine happened around the period or at other times. This is reliable information from a large study of an approved drug. Cohort study, 2023 How do testosterone levels and receptor genes change across the cycle? Testosterone increased during ovulation. Sexual interest and physical condition peaked during ovulation and correlated with changes in testosterone receptor gene expression. Most other mood and physical measures did not change significantly. Case-control study, 2021 Are there genetic differences between different types of PMDD? Yes. Different PMDD subtypes show distinct genetic patterns that could eventually help diagnose which type a woman has and predict which treatments might work. Survey study, 2021 Does vitamin D affect premenstrual symptoms, and does your genetics matter? The link depends on your genes. Women with one genetic type and low vitamin D had higher odds of fatigue and nausea. Another type had lower odds. A third type had more appetite changes with low vitamin D. Randomised trial, 2018 Does micronized progesterone help premenstrual syndrome? Yes. Micronized progesterone 200 mg daily from day 16-25 of the cycle was effective for PMS, especially pain, behavior changes, and fluid retention. Treatment should continue up to 6 months to prevent relapse. Case-control study, 2017 What cellular changes might explain why some women develop PMDD? Researchers found that women with PMDD have abnormal differences in genes related to a protein complex called ESC/E(Z), which helps cells respond to hormones. This could explain why women develop PMDD even when their hormone levels are normal. Cohort study, 2015 Do genetic influences on emotional eating change across the menstrual cycle? Yes. Genetic influences on emotional eating were two times higher after ovulation compared to before ovulation. Before ovulation, environmental factors played a larger role. Survey study, 2011 Is premenstrual syndrome inherited? Yes. Genes control about 95% of PMS risk while environment controls only 5%. Identical twins are much more likely to both have PMS (81% match) than fraternal twins (67% match), showing a strong genetic effect. Case-control study, 2010 Is a gene variant linked to PMDD? No, this particular gene variant was not associated with PMDD. This does not rule out other genetic factors or that PMDD has a genetic basis. Case-control study, 2007 Does progesterone activate the part of the brain that handles fear and emotion? In 18 healthy women, taking progesterone doses that matched luteal phase levels significantly increased activity in the amygdala (the brain's emotion and fear center) when viewing emotional images. This may explain why progesterone could cause anxiety in women with PMDD. Case-control study, 2007 What environmental and hormonal factors affect asthma severity in women? Body weight and hormonal changes around the menstrual cycle are associated with asthma severity in women. Smoking and occupational exposures also increase severity. Case-control study, 2007 Are there genes that increase the risk of PMDD? Genetic variations in the ESR1 gene (which codes for estrogen receptor alpha) appear linked to PMDD mood symptoms, suggesting genetic factors contribute to who develops the condition. This was found in a study of women with PMDD and unaffected controls. Cohort study, 2006 Are specific genetic variations linked to PMDD? No. This study found no significant association between eight common genetic variations in serotonin pathways and PMDD, suggesting these particular genetic variations are not major contributors to PMDD. Case-control study, 2005 Is a specific gene (AP-2 beta) linked to PMDD? No. This study found no difference in AP-2 beta genetic variants between women with PMDD and healthy women, suggesting this gene is not a risk factor for PMDD. However, the results should be confirmed in larger studies. Cohort study, 2002 How much do genes versus environment contribute to PMS symptoms? Genes accounted for 44% of PMS symptom differences. Genes for PMS overlap with genes for neuroticism and depression but 39% of PMS genetic variance is independent of these traits. Cohort study, 1998 Are premenstrual symptoms inherited, and are they related to major depression? About 56% of stable premenstrual symptoms appear to be inherited. The genetic factors for depression and premenstrual symptoms are mostly separate and not closely related. Study, 1995 Is PMS linked to genes, environment, or personality traits? PMS, depression, and traits like neuroticism appear to share common genetic influences. However, PMS also has specific environmental causes separate from personality traits. Study, 1989 What causes headaches that come before your period in older women? Changes in progesterone, serotonin, and histamine levels are involved. Older women with this type of PMS also have weaker nervous system responses to stress. Survey study, 2026 Could hormonal changes and immune problems explain menstrual issues in autistic women? This paper proposes that autistic women may experience severe menstrual and reproductive health problems because their immune cells react strongly to hormonal changes during menstruation and pregnancy. This proposed connection has not yet been tested. Cohort study, 2026 Do genetics and stress factors affect how severe premenstrual symptoms are? Yes. Women with genes linked to depression plus stress factors like low emotional resilience, childhood trauma, or alcohol use had significantly more severe symptoms and higher odds of probable PMS disorder. Survey study, 2026 What do female students believe causes PMS and what does it affect? Female students strongly believe that hormonal changes and genetic factors cause PMS, and that emotional distress is an effect. However, this measures what students think, not scientific proof. 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. 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. Survey study, 2025 What causes premenstrual syndrome and premenstrual dysphoric disorder, and how common are they? This review article explains the known biological, genetic and lifestyle factors behind premenstrual disorders rather than testing a treatment; it reports that any premenstrual disorder may affect up to 87% of women. Survey study, 2025 Are specific genetic variations linked to PMS and PMDD? Yes, specific genetic variations in the estrogen receptor 1 gene were linked to different PMS symptoms like anxiety and sleep problems, suggesting genetics may affect how sensitive women are to hormones. Sample size is not provided in the abstract. 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. Randomised trial, 2025 Does rimegepant prevent migraines around your period? Rimegepant prevented perimenstrual migraines in 85% of cycles with no side effects in this small study of 5 women, but we need larger studies to be confident in these results. Survey study, 2024 Can researchers create a better animal model to study premenstrual syndrome? Yes. Researchers developed a rat model combining stress and hormonal changes that produced greater biological changes than hormonal changes alone. Study, 2024 Do women with PMDD have different patterns in genes related to brain chemistry? Yes. Women with PMDD had lower activity of a specific gene (KCC1) related to brain chemistry during certain parts of the menstrual cycle. This supports the idea that PMDD may involve problems with how a calming brain chemical called GABA is controlled. Survey study, 2024 Is the PvuII-ESR1 gene variant linked to PMDD in South Indian women? No. The study found no significant association between this specific gene variant and PMDD. Non-randomised trial, 2023 Do anti-CGRP antibodies work the same for period-related migraines as other migraines? Yes. Both period-related and non-period-related migraine days improved equally when treated with anti-CGRP antibodies. Randomised trial, 2023 Does chronic stress make progesterone withdrawal anxiety worse in a rat model of PMDD? In stress-prone rats, yes. Chronic stress made anxiety from progesterone withdrawal more severe and changed how the brain's stress system responded. However, this is an animal study, so we cannot be certain the same happens in humans. Cohort study, 2023 Do plant compounds help irregular periods and PMS? Yes. All 15 women developed more regular cycles averaging 27.1 ± 3.2 days with reduced menstrual pain and flow. In the 7 women with PMS, depression, headache, and abdominal pain improved. The study was very small without a control group. 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. Study, 2022 What menstrual and weight issues occur in women with Fragile X syndrome? This case describes one woman with Fragile X syndrome who experienced recurring menstrual cycle disorders, genital inflammation, and weight fluctuations. She required ongoing specialized care. Survey study, 2021 Do cells from women with PMDD respond differently to estrogen? Yes, cells from women with PMDD show different genetic responses to estrogen and altered responses to cellular stress. This may explain why these women are sensitive to hormone changes. Study, 2021 Can genetic patterns help diagnose different types of PMDD? Genetic patterns divided people with PMDD into two groups that matched two clinical types (depression and a second type) with 89.0% consistency. The patterns were classified correctly 83.0% of the time, suggesting they could help identify which type someone has. Survey study, 2021 Does iron status affect the risk of PMS symptoms? Women with genes suggesting high iron were less likely to experience some PMS symptoms like headaches, confusion, and nausea. No link was found between genes for low iron and PMS symptoms. Survey study, 2021 Is premenstrual syndrome linked to heart and metabolic problems like high blood pressure? Yes, about 1 in 10 women with PMS have high blood pressure, and one study found PMS was associated with 1.4 times higher risk of developing high blood pressure. Limited research exists on how PMS relates to blood sugar levels. Survey study, 2021 Does PMDD change blood flow in a brain area linked to mood, depending on hormones? Yes. In this small brain-imaging study, women with PMDD showed lower resting blood flow in a mood-related brain region when given estradiol or progesterone, while women without PMDD did not. Early gene data also hinted at a possible biological link, but this needs much more research. Case-control study, 2020 Does a genetic variation in the estrogen receptor cause PMS? No. This specific genetic variant was equally common in women with and without PMS, so it does not appear to cause PMS. Lab study, 2020 Can an estrogen and gene variant cause PMDD-like mood symptoms? Mice carrying a BDNF gene variant developed anxiety and depression-like behavior when given estrogen, similar to PMDD symptoms. Survey study, 2020 Is a gene that controls how the body responds to estrogen linked to PMS? Possibly. A particular version of the estrogen receptor gene (ESR1) was more common in women with severe PMS, and it was linked to a bigger rise in estradiol before their period, but the study was small. Survey study, 2020 Do low progesterone and genetics explain PMS? Women with PMS have significantly lower progesterone in the luteal phase, especially those with swelling or severe symptoms. A genetic variant (PROGINS) was not significantly different between women with and without PMS. Survey study, 2020 Is a variation in the BDNF gene associated with premenstrual syndrome? No significant association was found between BDNF gene variations and PMS in young girls, so this gene may not play a role in PMS. 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. Cohort study, 2020 Do cells from women with PMDD respond differently to hormones? Yes. Cells from women with PMDD show unusual patterns of gene and protein expression in a hormone-sensing complex called ESC/E(Z). This is early laboratory research, not yet tested in people. Case-control study, 2019 Does a specific gene variant increase the risk of severe PMS? Women with the DD variant of the ACE gene may have a higher risk of severe PMS. Women with this variant had 3.43 times higher odds of severe PMS compared to women without it. Survey study, 2018 Does estrogen affect anxiety and mood problems in PMDD, and does a woman's genes play a role? In women with PMDD, higher estrogen before the period was linked to lower anxiety and stress, but only in women carrying a specific genetic variant. This shows correlation in this subset and cannot confirm cause and effect. Lab study, 2018 How does Baixiangdan capsule work to treat premenstrual dysphoric disorder? In rats with PMDD-like symptoms, Baixiangdan capsule reduced aggressive behavior and altered many genes in the brain, similar to fluoxetine. The exact mechanism remains unclear but likely involves brain signaling systems. Survey study, 2018 Could a genetic variation be linked to PMS risk? A genetic variation in the estrogen receptor gene was more common in women with severe PMS and water-retention type PMS than in women without PMS, but no clear overall pattern was found across all PMS cases. Interview study, 2017 Is PMDD caused by genes? Probably not much. There is limited evidence that genes cause PMDD, though some genes may play a role. The evidence is stronger for postpartum depression. Cohort study, 2017 Do women with PMDD have different cellular responses to ovarian hormones? Yes. Women with PMDD showed differences in how their cells respond to hormones, specifically involving genes that control gene expression. This lab study is very small so findings may not apply to real women. Survey study, 2015 Is a CLOCK gene variant linked to irregular periods? Yes, girls with the 3111T > C variant in the CLOCK gene had a clear increased risk of irregular menstrual cycles. This association held even after accounting for stress, anxiety, depression, and BMI. Case-control study, 2015 Do certain genes affect whether you get PMDD? No. This study found no link between two genes (DRD3 and CNR1) and PMDD risk. Case-control study, 2014 Is a certain gene linked to period symptoms and depression around pregnancy? Possibly. Women with depression during or after pregnancy reported more frequent premenstrual and menstrual symptoms, and a specific gene variant (RAI1) was more common in them. Survey study, 2014 Does a variation in the estrogen receptor gene affect PMS risk? A specific genetic variant (GG genotype) was 8 times more common in women with severe PMS and 7 times more common in those with edematous PMS, compared to women without PMS. This was a very small study. Case-control study, 2014 Do women with PMDD have different brain activation during emotion processing? Women with PMDD showed lower activation in certain brain emotion-processing regions, especially those carrying a specific gene variant (Met-allele). This is suggestive evidence but based on a small study. Survey study, 2014 Is a gene called COMT a risk factor for PMS? No, not directly. A gene called COMT does not appear to be linked to PMS overall, though women with joint pain may have a connection to a specific type of this gene. Survey study, 2014 Does a genetic difference in the serotonin system make thinking and memory problems worse in PMDD? Yes. Women with PMDD who carry the G/G genotype of a serotonin gene (HTR1A rs6295) showed greater decline in working memory and cognitive control before their period. Survey study, 2014 Did premenstrual syndrome have evolutionary advantages? This is a theory that PMS might have helped infertile partnerships end in the past, allowing women to find new partners. The theory fits some evidence but is not proven. Survey study, 2013 Does a bitter taste receptor gene affect PMS risk? This is the first study to link the TAS2R38 bitter taste gene to PMS. Women with higher sensitivity to bitter taste had more PMS symptoms, but the evidence is limited because this is a small study in one community. 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, 2010 Does Jingqianshu granule affect estrogen receptor activity in the brain? In rats with PMS-like symptoms, Jingqianshu granule (a Chinese herbal medicine) reduced estrogen receptor gene activity in the brain and brought levels back to normal. This was not tested in women. Survey study, 2010 Are certain personality traits linked to genetic differences in estrogen receptor genes in women with PMDD? Yes. Women with PMDD have different personality traits from women without PMDD, and some of these traits are linked to specific genetic changes in the estrogen receptor alpha gene. This suggests genes affecting the estrogen system influence mood and personality in PMDD. Study, 2010 Does Justicia pectoralis extract have hormone-like effects that could help PMS or menopause? In lab tests, yes. The extract showed estrogenic, progestagenic, and anti-inflammatory effects. However, this was done in cells and test tubes, not people, so we don't yet know if it actually helps people. Survey study, 2010 Is menstrual migraine genetic? About one in three to five women with migraine have migraine around their period. People with menstrual migraine may have more relatives with migraine, but we need more research to know for sure. Review, 2010 Which genes are involved in menstrual migraine? Menstrual migraine involves genetics, hormones, and environment, but the specific genes responsible remain unclear. This review discusses the evidence and suggests future research directions. Case-control study, 2010 Are personality traits different in women with PMDD? Yes. Women with PMDD showed higher levels of neuroticism-related traits including anxiety, stress susceptibility, embitterment, and mistrust than healthy women. These traits were stronger in women with more severe symptoms and linked to a genetic variation in the serotonin transporter gene. Study, 2009 What causes PMDD? PMDD is caused by multiple problems in how the brain and body handle hormones and brain chemicals, not by hormone levels being too high or low. It involves changes in serotonin, GABA, how the brain responds to estrogen, and possibly genetics. Survey study, 2008 Do genes related to mood and stress change during the menstrual cycle? One stress-related gene (FKBP5) showed lower activity in the follicular phase compared to other phases. Anxiety scores also changed during the cycle, but these two changes were not connected to each other. Study, 2007 Do compounds from Vitex rotundifolia act like estrogen in the body? In laboratory cells, two compounds from Vitex rotundifolia (agnuside and rotundifuran) acted like estrogen and turned on estrogen-related genes. This suggests they might help regulate hormone levels, though testing in people is still needed. Case-control study, 2007 Is PMDD linked to genetic variations in the estrogen receptor gene? Yes. Four genetic variations in the ESR1 estrogen receptor gene were significantly more common in women with PMDD than in controls. These associations were strongest in women with a specific genetic variation in the COMT gene. Case-control study, 2007 Does a genetic variant in the serotonin receptor gene affect PMDD risk? A genetic variant (the C version) was more common in women with PMDD. Having at least one C version was associated with increased PMDD risk, though evidence was borderline. Case-control study, 2007 Do women with PMDD have lower relaxin hormone levels? Yes, women with PMDD had lower relaxin levels than healthy women, a clear difference. This is a small study, so we need confirmation. Survey study, 2006 How common is PMS and what causes it? Millions of reproductive-age U.S. women experience premenstrual symptoms with varying severity. The cause appears to involve how the brain responds to normal changes in female hormones, and some people may have genetic risk. Survey study, 2005 Does a genetic variant in the estrogen receptor gene affect premenstrual and menopausal symptoms? Yes. Women with the SS genotype had 7.6-fold increased risk of premenstrual symptoms, 7-fold increased risk of hot flashes, and 13-fold increased risk of psychological symptoms compared to other genotypes. 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. Non-randomised trial, 2003 Do women with premenstrual dysphoria have different serotonin genes than others? Women with premenstrual dysphoria have fewer serotonin transporter proteins on their blood cells than controls, but genetic differences in the serotonin transporter gene do not explain this. Case-control study, 2002 Do women with both seasonal affective disorder and PMDD share genetic risk factors? Yes. Women with both SAD and PMDD were significantly more likely to have a specific genetic variation and family history of mood disorders, suggesting they share genetic vulnerability to both conditions. Lab study, 1998 How does progesterone dropping affect the brain's anxiety-control system? When progesterone suddenly drops, the brain's anxiety-calming system becomes much less effective. This might explain anxiety symptoms that some women experience before their period. Review, 1996 How does estrogen affect mood and memory? Yes. Estrogen affects mood and memory by changing levels of brain chemicals that control emotion and behavior. Low estrogen is linked to PMS, depression after childbirth, and postmenopausal depression, though human studies remain limited. Study, 1993 Why do some women with PMS have problems controlling their body temperature? Changes in certain brain chemical systems connected to hormones may cause temperature control problems. Different women showed different patterns of temperature disturbance. Cohort study, 1993 Is PMS partly genetic? Yes, this study suggests genes play a role in PMS, because identical twins had more similar PMS scores than non-identical twins, but it cannot prove genes are the only reason. Study, 1992 Is a certain brain chemical different in women with PMS? No. The brain chemical calcitonin gene-related peptide did not show a clear difference in women with PMS compared to women without PMS, and it did not change noticeably across the menstrual cycle. Survey study, 1987 Are menstrual cycle features and premenstrual symptoms inherited? Menarche age, cycle regularity, and premenstrual symptom reporting may be inherited, but menstrual cycle length may not be. The findings should be interpreted cautiously. Show more studies Ask AI about this page Copy prompt ChatGPT ↗ Claude ↗ Perplexity ↗ Google AI Mode ↗ Grok ↗