Testosterone and estrogen. We all have some of each, but it’s the concentration that, for simplicity’s sake, make guys guys and girls girls. Women have more estrogen, men have more testosterone. Too much testosterone for women can make them more aggressive (female litigators and hockey players, for example, have higher-than-average testosterone levels). And too much estrogen (or not enough testosterone) has been linked with all sorts of negative side effects for men, including:
A new study found that men with skin cancer are 30% more likely to die or have a recurrence than women. Researchers thought that estrogen might have a protective effect. But the reasons are more complicated. You should check out my article on the Talking About Men’s Health blog, here.