The most common reason adults lose hair is androgenetic alopecia — pattern hair loss — which is driven by genetics and hormones and affects the majority of men and a large share of women at some point in life. But shedding can also come from stress, illness, childbirth, thyroid issues, iron deficiency, medications, or tight hairstyles, and each of those is handled differently.
Transcript
Here's something that surprised me. The hair you can see and touch isn't alive. It's a strand of protein your body has already finished. Everything that decides whether it grows, how thick it is, how long it lasts, happens in the follicle below the skin. That's the dividing line for anything you put on your head. If it can't reach the follicle, it's working on something that's already dead.
Because the causes look similar in the mirror, the only reliable way to know which one you have is an evaluation by a doctor. That is exactly what a first consultation is for: a doctor looks at your scalp, your history, and your photos, and tells you what is actually going on.
Uberhair's free hair check gives that doctor a head start — guided photos of your scalp from your own phone, taken before you ever sit in a chair.