Cutting back on sleep drastically reduces a healthy young man’s testosterone levels, according to a study published in the June 1 issue of the Journal of the American Medical Association (JAMA). Eve Van Cauter, PhD, professor in medicine, was the director of the study.
Men who have been diagnosed with poor sperm quality and who are trying to have children should limit their cell phone use. Researchers have found that while cell phone use appears to increase the level of testosterone circulating in the body, it may also lead to low sperm quality and a decrease in fertility.
Emotional crying is a universal, uniquely human behavior. When we cry, we clearly send all sorts of emotional signals. In a paper published online today in Science Express, scientists at the Weizmann Institute have demonstrated that some of these signals are chemically encoded in the tears themselves. Specifically, they found that merely sniffing a woman’s […]
It seems the old nature versus nurture debate cannot be won. But a new Northwestern University study of men in the Philippines makes a strong case for nurture’s role in male to female differences – suggesting that rapid weight gain in the first six months of life predicts earlier puberty for boys. The researchers think […]
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