PMS

Premenstrual syndrome (PMS) is defined by the presence of recurrent, severe symptoms occurring before menstruation with a complete absence of symptoms after menstruation. 2 The syndrome encompasses over 150 different symptoms across multiple organ systems, including headaches, migraine, backache, joint pains, bloatedness, asthma, hay fever, and epilepsy, but these are only classified as PMS when they exhibit a strict temporal relationship with the menstrual cycle and a symptom-free interval in the postmenstrual phase. 2 Katharina Dalton, who named the syndrome in 1953, emphasized that the condition is limited to menstruating women and is distinct from continuous depression that lacks a postmenstrual reprieve. 2

The etiology of PMS, according to Dalton, lies not with serum hormone levels but with the behavior of progesterone receptors (PR). 3 She proposed that PMS results from a failure in the transport of sufficient progesterone molecules by PR into the cell nuclei, which explains why symptoms occur in the luteal phase when progesterone is present and are absent during pregnancy when progesterone levels are massively elevated. 2 This hypothesis accounts for the clinical observation that PMS is unrelated to blood levels of progesterone, estradiol, or other hormones, and why pharmacological doses of progesterone—often reaching blood levels equivalent to the third month of pregnancy—are required for effective treatment. 7 Dalton reported that among 1,096 PMS patients, the most frequent dose was 800 mg of progesterone suppository daily, with 30% requiring even higher doses. 7

Ray Peat framed PMS primarily as a consequence of a progesterone deficiency driven by declining thyroid function and rising estrogen, particularly as women approach their late 30s and 40s. 6 He argued that the pharmaceutical industry created the misconception that menopause is an estrogen deficiency, when in reality the failure of progesterone production is the central problem. 6 Peat explained that as estrogen rises, thyroid and progesterone decline, leading to a sluggish digestive system, increased absorption of endotoxins, and a vicious cycle that can manifest as migraines and other premenstrual symptoms. 6 He noted that supplementing thyroid or increasing dietary fiber to reduce endotoxin can break this cycle and restore progesterone balance. 6 Georgi Dinkov extended this perspective by characterizing PMS as largely an energetic disorder driven by estrogen's role as a major brain excitant and excitotoxin, which elevates cortisol and produces symptoms ranging from psychosis to water retention. 4

The clinical consequences of untreated PMS are severe and extend beyond the sufferer. Dalton documented that 37% of women attending a PMS clinic had a previous psychiatric hospital admission, 34% had attempted suicide or homicide, and 6% had a history of criminal behavior. 1 Surveys showed that the attempted suicide rate increased sevenfold and shoplifting was thirty times more common in women during the second half of their menstrual cycle. 1 The condition also profoundly affects family members; Dalton found that 54% of mothers bringing children to a surgery for coughs or colds were in their paramenstruum, and children under two years were at highest risk of a surgery attendance during their mother's premenstrual phase. 8 Postnatal depression frequently transitions into PMS, with 84% of women who experienced postnatal depression later developing PMS, suggesting a common pathology involving progesterone receptor failure at different reproductive stages. 5