We say this a lot, but our hair really is a window into our overall health. Indeed, our hair's condition can tell us so much about what is going on inside the body. When a body function or process is disrupted or compromised, we can have hair thinning.
Hair is not crucial for our survival like it was for our human ancestors, who needed hair for warmth. Thus, when our body needs to pull energy toward fighting an illness, fewer nutrients and resources are available for growing and maintaining healthy hair. Let's take a look at some of the most common illnesses that can cause hair thinning.