Sex differences in human physiology
Female fertility declines after age 30 and ends with the menopause. Female physical experiences vary depending on external forces such as diet, marriage patterns, culture, and other aspects. In Western nations menstruation begins to affect females at 13 and menopause starts around 51. In non-industrialized countries, on the other hand, most females begin menstruation at a later age. More lactation in the lifetime of non-western females inhibits ovulation and extends the number of fertile years. Pregnancy in the 40s or later has been correlated with increased risk of Down syndrome in the children. Males are capable of fathering children into old age. Paternal age effects in the children include multiple sclerosis, autism, breast cancer and schizophrenia, as well as reduced intelligence. Adriana Iliescu was reported as the world's oldest woman to give birth, at age 66. Her record stood until Maria del Carmen Bousada de Lara gave birth to twin sons at Sant Pau Hospital in Barcelona, Spain on December 29, 2006, at the age of 67. In both cases IVF was used. The oldest known father was former Australian miner Les Colley, who fathered a child at age 93.
Germaine Greer
Natalie Angier, writing in "The New York Times", called "The Change: Women, Ageing, and the Menopause" (1991) a "brilliant, gutsy, exhilarating, exasperating fury of a book ... tantalizingly close to being a potential feminist classic on a par with "The Female Eunuch"." In it, Greer writes of the myths about menopause—or as she prefers to call it the "climacteric", or critical period. "Frightening females is fun," she wrote in "The Age" in 2002. "Women were frightened into using hormone replacement therapy by dire predictions of crumbling bones, heart disease, loss of libido, depression, despair, disease and death if they let nature take its course." She argues that scaring women is "big business and hugely profitable". The book, including the medical information, was updated and reissued in 2018.