15) Why do some men grow breasts?

It is caused by a mixture of alcohol and excessive weight. The reason why alcohol is involved is because when men drink alcohol, it is said to increase the female hormone oestrogen massively. As a result massive alcohol intake and oestrogen levels over many years can result in men growing breasts.

The reason excessive weight is involved is that when men eat too much it puts fat around their waist and chest. If they exercise, this fat might turn to muscle, if they don’t exercise then this fat will look like breasts.

Incidentally before you ask, I am not sure whether the high levels of the female hormone oestrogen actually affects a mans fertility, but the logical answer would be yes. Excess alcohol can cause impotence and erectile dysfunction and so is more than likely to reduce his fertility as well.