A Woman's Curse? - Notes From Transcript

Menstruating women are often subjected to taboos in many societies, being considered unclean and excluded from various activities and places.
These taboos can range from eviction from the kitchen to isolation in menstrual huts.
Beverly Strassmann studied the Dogon people of West Africa, who require menstruating women to stay in menstrual huts.
Strassmann suggests this custom serves as a visible sign of a woman's condition, helping men infer paternity.

Dogon women menstruate approximately 110 times during their fertile years, while Western women menstruate about 350 times.
Dogon women menstruate less due to more frequent pregnancies and prolonged nursing (at least 20 months).
Western women's higher menstruation rate, possibly influenced by birth control pills, may contribute to higher cancer rates.
The author suggests aligning with the body's natural rhythms rather than acting against them.

Anthropologists emphasize the universal importance of menstruation, with customs often taking negative forms as menstrual taboos.
Taboos may prohibit menstruating women from various interactions and activities, marking them as impure.
Early interpretations of these taboos ranged from Freudian anxieties about castration to practical concerns about hunting and hygiene.
Strassmann shifted the focus to the evolutionary advantages these taboos might confer, emphasizing the role of biology.

Strassmann aimed to study the interplay of biology and culture in reproductive behavior, particularly in a natural-fertility population.
She studied the Dogon, tracking women's stays in menstrual huts and confirming menstruations with urine tests.
Her findings challenge earlier interpretations, suggesting that menstrual taboos among the Dogon serve to channel paternity to the upbringing of their own children.
Strassmann also proposed a resource-conservation theory for why menstruation evolved.

Menstruation is a phase of the ovarian cycle, influenced by estrogen and progesterone.
The cycle involves the thickening of the endometrium (uterine lining) in preparation for pregnancy.
If conception occurs, hormone levels remain high to support the pregnancy; otherwise, hormone levels drop, leading to menstruation.
Menstruation involves shedding the superficial layers of the endometrium, a process lasting three to five days in humans.

Strassmann conducted research in Dogon villages, where menstrual huts are separate from other dwellings.
The Dogon are millet and onion farmers who practice polygamy and maintain traditional customs.
Strassmann's detailed study of menstruation was unique, requiring her to integrate into village life and track hut visits.
The menstrual huts are conspicuous, allowing men to easily observe which women are menstruating.

Dogon women stay in menstrual huts to avoid threatening religious altars with their perceived impurity.
Violations of this taboo are rare due to the women's internalized sense of responsibility.
Strassmann suggests that these taboos also serve a functional role related to reproduction, signaling the absence of pregnancy.
Menstrual information helps track paternity, crucial in a society where descent and land inheritance are patrilineal.

Strassmann tracked hut residency for 736 days and collected urine samples to confirm menstruation.
86% of hormonally detected menstruations correlated with hut visits, indicating high compliance.
Violations of the taboo were rare and often involved women near menopause.
The huts provide a reliable signal about a woman's fertility status, influencing paternity decisions.

Women comply with the menstrual taboo reluctantly, complaining about the huts.
Religious conversions away from the traditional Dogon religion often lead women to abandon hut visits.
Men may trade the reproductive advantages of the taboo for economic benefits from the new religion.

Dogon women experience about 110 menstrual periods in their lifetime, much fewer than the 350-400 cycles in industrialized cultures.
This difference is attributed to prolonged lactation amenorrhea, where nursing suppresses ovulation and menstruation.
Strassmann suggests that fewer cycles are more typical of human evolutionary history.

Strassmann's findings challenge the idea that monthly menstruation is normal.
The female body may be biologically designed for extended periods of lactation amenorrhea.
Oral contraceptives, which force continuous cycling, may not be biologically optimal.
Contraceptives mimicking lactation amenorrhea might better protect against reproductive cancers.