Word: luteal
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Even the normal rise and fall of estrogen during a woman's menstrual cycle can affect mental performance. Young women do better on Sherwin's word-pair memory tests during the luteal phase of their cycle, when estrogen and progesterone levels are high, than during menstruation, when hormone levels are low. This doesn't mean women are less competent late in their cycles, says Sherwin; the changes are too minor "to have any real effect in the real world." Still, there is little doubt that the foggy forgetfulness that envelops some women as they approach menopause is a direct result...
...fact, almost 30% of all cycles experienced by the 66 women over a 12- month span were in some way disrupted. The upset was caused either by a failure to ovulate (or produce an egg) or by a shortened "luteal phase," a critical stage of the menstrual cycle during which the hormone progesterone is produced. More important the researchers found that these disturbances were directly related to dramatic bone loss: the 20% who missed ovulation at least once, for example, suffered as much as a 4% reduction in bone density in one year...
Boston Society of Biologists. I. "Chorionic Gonadotropin and Luteal Secretion in Primates." Professor F. L. Hisaw. II. "On Seasonal Changes in the Testes of Deer and Their Relationship to the Growth of Antlers." Professor G. G. Wislocki. III. "Biochemical Aspects of Antler Growth." Dr. Joseph C. Aub, Regina McLean, and Dorothy M. Tibbets. Biological Laboratories, Divinity Avenue, 8 P. M. Wednesday, November 19. --Harvard University Gazette...
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