--- title: Legal and forensic: 49 studies, explained | Niyora description: 49 studies on legal and forensic 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/life-area-legal-crime/ --- - [Niyora](https://niyora.com/) - [Research](https://niyora.com/research/) - [Library](https://niyora.com/research/library/) - Legal and forensic # Legal and forensic: what the research says 49 studies on legal and forensic in PMS and PMDD, each explained in plain English. 1 of them use the strongest designs: randomised trials and systematic reviews. Survey study 23 Study 6 Review 5 Cohort study 3 Randomised trial 3 Case-control study 3 Cohort study, 2014 Does childhood abuse increase the risk of PMS in adulthood? Yes, women with childhood emotional abuse had 2.6 times higher PMS risk, and those with physical abuse had 2.1 times higher risk. This 14-year prospective study provides strong evidence. Survey study, 2026 Are PMS and PMDD linked to suicidal thoughts and violence toward family? Yes. Women with moderate-to-severe PMS had 1.76 times higher risk of suicidal thoughts, and women with PMDD had 1.88 times higher risk. Women with PMDD had 3.04 times higher likelihood of violence toward family. Survey study, 2026 How common are PMS and PMDD in teenagers, and can a new questionnaire measure their impact? Very common. 46.6% of teenage girls had moderate-to-severe PMS and 22.5% had PMDD. The questionnaire accurately measured how much their symptoms disrupted their daily lives and school. Review, 2026 How do social factors like stigma and unequal care responsibilities affect premenstrual symptoms? This review shows that PMS and PMDD arise from both biology and social context. Menstrual stigma, unequal care work, violence, financial dependence, and healthcare bias all shape how symptoms develop and whether women get help. Survey study, 2025 Is PMS worse in girls living through violence and insecurity? Yes. Adolescent girls exposed to political violence, living with insecurity, and experiencing depression-like symptoms were more likely to have severe PMS. Girls exposed to multiple types of violence had especially high rates of severe PMS. Randomised trial, 2025 Can muscle relaxation exercises reduce PMS symptoms and tendencies toward violence? Yes, in this trial, women who did progressive muscle relaxation exercises for eight weeks had notably lower PMS symptoms and lower violence-tendency scores than women who did not. Survey study, 2022 What are the biggest research gaps in women's health, especially for menstrual conditions? Research is lacking in many important areas, especially communication between women and doctors about health, and support for menstrual conditions like PMDD and heavy periods. There is more research on menopause but not on how to help women manage other conditions. Survey study, 2022 Is premenstrual syndrome related to aggression in adolescent girls? Yes. Aggression tendencies increased as PMS severity increased, and girls who noticed increased anger before their period had higher PMS intensity overall. Cohort study, 2022 Do adverse childhood experiences increase risk of PMS and PMDD? Women who experienced adverse childhood events had significantly higher risk of PMS and PMDD. Those with 4 or more such experiences had 2.46 times higher risk than those with none. The link was stronger for PMDD than for PMS. Survey study, 2021 Do women who experienced childhood maltreatment have more PMS? Yes. Women with childhood maltreatment had 47% higher risk of PMS, with physical and emotional abuse showing the strongest associations. Systematic review, 2021 Does experiencing violence as a child increase the risk of PMS or PMDD as an adult? Yes. Women who experienced physical or sexual violence in childhood have nearly twice the risk of developing menstrual mood disorders in adulthood compared with women who did not experience this violence. Case-control study, 2018 Does PMS affect thinking and memory? Women with PMS showed slower brain responses to sounds compared to women without PMS, suggesting possible cognitive effects, though memory itself was not directly tested. Randomised trial, 2018 Does adding homeopathy to regular treatment help PMS or PMDD? Yes, the homeopathy plus usual care group improved significantly more than usual care alone (p=0.03). However, the researchers said a larger international trial would not be practical because recruitment was extremely difficult. Lab study, 2018 Does the menstrual cycle change the chemicals in our exhaled breath? Yes. The pattern of volatile chemicals in exhaled breath changes throughout the menstrual cycle, with the most noticeable changes during the premenstrual period and menstruation. Cohort study, 2011 Which six symptoms best identify who has PMS? Six key symptoms identify PMS just as well as tracking 17 symptoms: anxiety or tension, mood swings, aches, appetite changes, cramps, and decreased interest in activities. They correctly classified 84 to 86 percent of cases. Case-control study, 2007 Do women with PMDD see emotions in faces differently during the luteal phase? Women with PMDD showed more negative bias during the luteal phase, seeing neutral faces as sadder than they were. The statistical effect was modest and might not hold up with stricter testing. Survey study, 1989 What does research say about what causes PMS and what treatments work? A review of PMS research found no definitive cause and no universally effective treatment. Lifestyle approaches like diet, exercise, and support help many women, while some medications like alprazolam and mefenamic acid help some, but progesterone therapy is ineffective. Survey study, 2026 Are there differences in brain activity and connectivity in women with PMDD? Yes, women with PMDD show increased activity in the brain's waste-clearing system (glymphatic system) and increased connections between the hypothalamus and multiple emotion-processing brain regions compared to women without PMDD. Survey study, 2026 Should PMDD be recognized in Indian law as affecting criminal responsibility? The analysis concludes that PMDD should be legally recognized in India as affecting judgment and behavior. Modern medicine recognizes PMDD as serious, but Indian criminal law currently does not acknowledge it. Survey study, 2026 Should having PMS reduce someone's punishment if they commit a crime, under Iranian law? This is a legal analysis, not a health study. It argues that Iranian law currently has no clear rule on this, even though PMS is recognized as a mental disorder and other countries already let it reduce criminal sentences. Survey study, 2025 How do social support and physical activity affect PMS? Women with more social support and those who exercised more had fewer PMS symptoms. Socioeconomic status and age also played a role. Study, 2025 Can premenstrual dysphoric disorder affect how responsible a woman is for her actions? A legal analysis concludes that PMDD can significantly limit a woman's responsibility for criminal acts, and in some cases may eliminate it entirely. Survey study, 2025 Are violent tendencies linked to premenstrual symptoms? Students with higher PMS symptoms, especially anxiety, irritability, and sleep problems, had higher violence tendency scores. This shows a link in the data but doesn't prove that PMS causes violence. Survey study, 2023 Is there a link between stress and PMS in women in prison? There is a moderate correlation between stress and PMS, but it was not statistically significant. No relationship was found between stress and quality of life. Survey study, 2021 Does COVID-19 stress and social isolation cause changes in the menstrual cycle? While women reported stress from financial worries and health concerns, there was not enough evidence that social distancing during COVID-19 actually caused menstrual changes. Survey study, 2020 Can premenstrual syndrome be used to reduce criminal responsibility? This research examines whether women should be legally excused from criminal responsibility because of PMS. It identifies legal barriers to using such evidence in courts. Survey study, 2017 Is there a link between menstrual cycle phase and fatal self-harm? Most women who died by suicide were in the premenstrual (late secretory) phase (41.7%), suggesting a possible connection. However, this is a small autopsy study from one region in India with no comparison group, so cause and effect cannot be proven. Survey study, 2015 Does the ability to recognize emotions in faces change with menstrual cycle hormones? No clear difference in overall emotion recognition across menstrual cycle phases was found. However, estradiol levels were specifically linked to better disgust recognition, and progesterone levels were linked to slower responses to facial expressions in general. Survey study, 2014 Should PMDD be included as an official diagnosis in psychiatric manuals? The authors argue yes, because evidence confirms PMDD exists, affects a minority of women, and exists worldwide. Making it official allows affected women to receive proper recognition and treatment. Study, 2012 How should criminal law treat women with premenstrual dysphoric disorder? This is a legal argument, not medical research. The author argues that women with PMDD need legal defenses that account for whether the condition affected their thinking and judgment. Survey study, 2011 Does experiencing discrimination increase the risk of PMDD? Yes, women who experience discrimination were significantly more likely to have PMDD. However, this study shows a link, not proof that discrimination causes PMDD. Survey study, 2011 Do women with PMDD experience more physical, emotional, or sexual abuse than other women? No. Women with PMDD reported similar rates of abuse as gynecological patients and healthy controls, though abuse was common in all groups. Randomised trial, 2008 Can adding aripiprazole to an antidepressant help premenstrual violence? A single 38-year-old woman with major depression and severe premenstrual violence improved when aripiprazole was added to her SSRI. However, this is only one case, so we cannot be confident it works for other women. Non-randomised trial, 2004 Does the menstrual cycle affect brain activity related to memory and attention? Yes. Brain electrical activity related to attention (the P300 response) was significantly stronger during menstruation than during ovulation. Memory effects were similar at both cycle phases. Survey study, 2003 Do women with PMDD act more aggressively before their period? Yes, clearly. Women with PMDD used more aggressive tactics during the premenstrual phase and had higher rates of verbal and physical aggression overall compared to women without PMDD. Case-control study, 2002 Do women with PMDD have worse cognitive function during their menstrual cycle? Tests found no significant differences in cognitive function between women with PMDD and controls, despite the PMDD group reporting cognitive problems. The researchers suggest these complaints may come from how women perceive things rather than actual cognitive deficits. Review, 2002 Can PMS or premenstrual psychosis be used as a legal defense? A small subset of women experience psychotic symptoms during the premenstrual phase. This defense has largely failed in US courts but has been used in Great Britain to support claims of diminished capacity. Lab study, 2000 Does calling PMS a psychiatric condition change how people think about it? Labeling it as a psychiatric condition increased recommendations for psychiatric help. However, it did not cause the widespread negative effects like increased stigma or misuse that some people feared. Case report, 1992 Can premenstrual tension affect a court sentence? In this court case, a woman's sentence for traffic offences was reduced because she had premenstrual tension at the time. The court agreed the original 6-month disqualification from driving was not necessary or appropriate. Review, 1990 Can PMS be used as a legal defense in criminal cases? PMS has been successfully used as a defense in Great Britain but not yet tested in American courts. To use it as a defense, you must prove you had PMS at the time and that it caused your actions to be involuntary or prevented the mental state needed for the crime. Study, 1989 Does the menstrual cycle change how the two sides of the brain handle visual tasks? This small, preliminary study found some signs that brain response patterns for certain visual tasks shift across the cycle, but the pattern was mixed, so it is not a firm conclusion. Review, 1988 Can PMS be used as a legal defense in court? No, the PMS legal defense has been unsuccessful in the United States and is unlikely to succeed in the future. Review, 1987 Should PMDD be a separate psychiatric diagnosis? This was debated during development of the DSM-III-R. Some experts felt PMDD was a real but rare condition, while feminist groups worried that listing it as a psychiatric disorder would inappropriately label women as mentally ill. Survey study, 1986 Can premenstrual syndrome be used as a legal defense in criminal cases? Not yet as a full defense. Canadian courts recognize PMS as a mitigating factor in sentencing. The authors say stronger medical recognition would help establish it as a formal defense. Study, 1986 What progress have researchers made in understanding PMS? Researchers are making progress in defining and diagnosing PMS, but many important questions remain about whether PMS is one condition or many, and how it relates to mental health conditions. Case report, 1980 Does progesterone stop criminal behavior in women with severe premenstrual syndrome? Yes. Three women with long histories of repeated serious crimes (manslaughter, arson, assault) that happened in a premenstrual pattern had normal behavior after progesterone treatment. Study, 1980 Does personality type affect whether women develop premenstrual tension? Standard personality tests did not show that personality type predicts premenstrual tension, but women did report higher anxiety and more symptoms during the menstrual phase. Study, 1980 Do women commit violent crimes more often at certain times in the menstrual cycle? Yes. Among 50 women charged with violent crimes, 44% committed their offense during the paramenstrual phase (just before or after the period), with very few crimes during ovulation and the post-ovulatory phase. Survey study, 1972 How does the menstrual cycle affect mood and sexual arousal? The menstrual cycle affects mood in women. The strongest effects occur before the period, when some women become depressed or irritable. 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