Thinning hair......

I come from a family with a long history of thin hair. Although not bald at this point, I find my hair slowly thinning out.
Has anyone found any product to be effective in restoring hair loss? I know the market is probably similar to the supplement industry. Most of the products out there are total junk (I would suspect). If anyone has had any personal experiences with a product that works I would really appreciate your input.