I've been taking fish oil for over a year. Now I'm adding 3 other vitamins to that one item list. My nails have been breaking a lot in the past year and now I have a bit of hair loss. The hair loss seems to be coming out from the same spot every time I wash it, and overall it feels and looks thinner to me. One thing I've never complained about was having thick hair. Loved it and don't want to lose anymore if I can help it. So, adding some Biotin, which seems to have some pretty good reviews by others who have used it, and also vitamin C and E. Couldn't find any A in the small store where I picked these up so will wait until I hit a larger store.
(this is my ongoing record so I know when I started these other vitamins)