Why are you losing hair? There's not much else that can scare you as quickly as finding out that your hair is falling out in large amounts. What will happen to you if it continues to do this? It is not uncommon for people to lose hair. Most people lose as much as 100 strands every single day. But when it comes more obvious or when you start to see a large amount of hair falling out at once, it is time to get in to see your doctor. It also helps to know why this can happen. The most common reasons are not the only reasons to lose hair.