My father-in-law is a doctor. He has started a blog. His first post is ready for reading:
Vitamins: not magic beans
There is more magic associated with vitamins than any other pharmaceutical, including antibiotics. All people like magic, including me, and are hopeful that somewhere there is a panacea that will protect us from things we fear – with vitamins, it is disease, aging, death – and grant us restored youth, strength, sexual performance.
Unfortunately, vitamins are not the magic beans.
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You can read it via LJ here: 
drsecondopinion
