|An editor thinks that this article may not be neutral. (March 2011)|
After boys grow, we call them a man. There are some times we also call a man a "boy". For example, we often use the word "boy" when talking about adult males who have a partner, for example in the word boyfriend. Sometimes people also use the word in a bad way for a black man or male slave.
There are some sexual differences between a man and a woman. Men have sex organs which we call "external" (not in the body). But many parts of the male reproductive system are internal too. The study of male reproduction and sex organs is "andrology".
Men normally have the same illnesses as women, but there are some sexual illnesses which men have only, or more often.
Biology is not the only thing which makes people feel they are men, or that other people are men. Perhaps one in 100,000 people are men who were born without a male body. We call these transgendered or transsexual men. Some men can have a hormone or chromosomal difference (for example "androgen insensitivity syndrome"). Some men have other intersex conditions. Some of those intersex people who people said were female (girls) when they were born later want to change this.
There are more differences between men and women, not only sexual differences.
- Some people say men, as a group, are more aggressive than women; they want to fight more. But most research has found that men and women are equally aggressive.
- In modern western society, few men wear make-up or clothing of the sort women traditionally wear. (Some men wear women's clothes ("cross-dressing").)