I’ve had fine, long hair my entire life, but visible thinning only started to show up about three years ago. As most of us do, I didn’t pay too much attention to it, assuming it will fix itself, but as most things don’t, the issue at hand didn’t. I’d decided that 2026 is the year I take my overall health seriously. A complete blood profile revealed extremely low ferritin levels, an essential component that contributes to hair health.