whoa - I have these same problems! My doctor said she thinks it's because last year (ok it's a long story but I'll try) I got TMJ so I couldn't eat anything; I was having just a fruit and milk smoothie for each meal and I lost 40 lbs and all this stuff, but I went to a nutritionist in December and she helped me change my diet to a VERY healthy one, and then in early March my hair started just coming out in huge masses.
I never lost my hair before, but I would shampoo it and when I pulled my hands away from my head hair would be all over my fingers; then I'd brush it and my brush was covered; then when I run my hands through it strands come out all over me!
I've had my thyroid tested 3 times already and nothing, no illnesses, no deficiencies (but 1... hang on I'll get there), so we're thinking it was the diet.
THEN we realize "duh, I haven't had a cycle in 8 months" (don't worry - I'm getting that worked on), so we had the OB/GYN take blood and she tested my estrogen levels. I'm 18 yrs old and I had NONE. Absolutely none! So we think we've got that sorted out now, and I've noticed my hair doesn't come out as much - but it's still coming out.
Does anyone know if there's anything I can take/eat/do/not-do to help my hair look healthy again?!
(sorry I know that was a long post)