Have you ever noticed more hair in the shower drain or on your pillow in the morning? Losing hair can feel scary—especially when you don’t know why it’s happening. While it’s normal to shed 50–100 hairs a day, anything more could be a sign that something else is going on. Sure, stress and genetics are common causes. But what about the not-so-obvious  reasons? Let’s take a look at 7 lesser-known causes of hair loss  that you might be missing—and why they matter. 1. Your Diet I