The Male Dodo: Are Men Necessary?
The hormone testosterone, in sum, is the supreme female "invention". Not only does testosterone make males do dangerous things, such as fight each other or take absurd risks. It also weakens the immune system. Males, we know, are more likely to get diseases. But now we can see biological reason why. The higher they push their testosterone levels to win fights and seduce females, the greater the risk of disease they run. The biochemical connection is direct.
The Male Dodo: Are Men Necessary? The Economist.
In: Giddens A. (2001). Sociology: Introductory Readings.
Cambridge: Polity Press.