Men who are more sexually active in their 20s and 30s may run a higher risk of prostate cancer, research suggests. The Nottingham University study quizzed 800 men on how often they had sex or masturbated. Those who were most active while younger had more chance of developing cancer later in life. The researchers said higher levels of sex hormones could lead to a bigger sex drive and the cancer, th
Cutting the competitionMutilating male members may mar men’s mischievous matings CIRCUMCISION and other forms of male-genital mutilation are commonplace in many societies around the world. The origin of these practices, however, puzzles anthropologists and evolutionary biologists. They wonder what benefit they could bring, especially given the obvious risks of infection and reduced fertility. Expl
リリース、障害情報などのサービスのお知らせ
最新の人気エントリーの配信
処理を実行中です
j次のブックマーク
k前のブックマーク
lあとで読む
eコメント一覧を開く
oページを開く