I've had hair loss for years, varying from very severe to normal at times. When I first started eating PB, my hair loss slowed A LOT, then bam! Falling out so bad that I was thinking I would be bald if it continued. While I had technically 'normal' ferritin according to much of the medical establishment (36), I started supping with iron (in particular HemaPlex). Took about 30 days for the loss to slow down, but I am 2 weeks into normal hair loss. No more handful upon handful. Now, after a shower, when I (wide tooth) comb my hair, maybe 5 to 10 hairs come out. Such a relief.
Seriously, I'd bet on the iron.
Because if you didn't know, of that is life made: only of moments; Don't lose the now.