Hair loss doesn’t occur because you never took off your hat in college, or because you eat poorly, or because of mysterious gypsy magic. Genetics is the main factor that determines hair loss, and there’s not much you can do about your genes. (Thanks a lot, Grandpa!)
If you notice your hair thinning, you can try products like Propecia that will slow your loss. Or products like Rogaine that’ll actually re-grow your hair. Or a host of others. You just need to know which work and which don’t. Read on.