I remember years ago there was a study that also said your body just basically passes them thru with very little to no actual benefits from a multi-vitamin, something like only 10% absorption rate IIRC, so if you take a vitamin with 200% of your daily need, you still only get 20%, I have several people in my family actually in the medical field PHD etc. My older sister Lori grad from UC Davis & my younger brother Mark, he's a Stanford grad., that confirmed that study, I would tend to believe them, they went to actual medical school... There is some benefits, but you would have to take so damn much, it wouldn't be really feasible... basically makes for expensive pee & crap...LOL... your better off just eating or drinking an actual meal, high in what ever vitamin your lacking... my $0.02 cents