Hair loss is a big deal. It’s not just old men. It happens to young men, too, and can be devastating to a woman’s ego. Hair loss is largely accepted as normal or unavoidable, but just because something is common does not mean it’s normal. By examining different causes of hair loss, it may be possible to slow or even reverse this process. Here are a few of the leading causes of hair loss, and what to look at to reverse the trend.