I'm 58 and I take a multivitamin for seniors (even though I don't consider myself a senior!) that contains all the "essential" vitamins that we're supposed to get on a daily basis. Plus I also take 1100mg Omega 3 fish oil which has been shown to be helpful in fighting depression. I'm pretty healthy - get one cold per year and that's about it as far as illness is concerned. So I figure this regimen must be working for me.