Approval and Hair Loss
There isn't a thing you can do yo prevent it. Google telogen effluvium.
Take your vitamins, eat your protein, and hope. I never lost any hair, and didn't do anything special. I took no supplements, and washed my hair with a bar of soap.
Be careful of taking lots of biotin. It doesn't stop or slow hair loss, but it will start growing hair on your arms, legs, and face.
6'3" tall, male.
Highest weight was 475. RNY on 08/21/12. Current weight: 198.
M1 -24; M2 -21; M3 -19; M4 -21; M5 -13; M6 -21; M7 -10; M8 -16; M9 -10; M10 -8; M11 -6; M12 -5.
I never had any hair loss. A lot of people seem to have *some*, but not enough that others notice. You either will or you won't - there's not much you can do to prevent it. Keeping up with your supplements and protein will probably keep it from getting worse than it would be otherwise, I suppose. But other than that...