How effective are multivitamins?

Questionable: Multivitamines are compounds that contens multiple vitamines the value of multivitamines are questionable because most of the food and nutricional suplements are packed with vitamines. Beside studies done in specific vitamines such as vitamin e, a, c demostrate no evident beneficial efects but they also can acelerated certain type of cancers. The benefit as antioxydants is also questionable.

Poorly effective: In general unless there is an obvious deficit of a particular vitamin it is difficult to associate symptoms to a deficit. Exceptions are vitamin B12 and vitamin d deficits which are common. If a person has access to a diet that is varied is unlikely to have a deficit unless pt has malabsorption

Proven effective: There is a large body of research showing that that taking a multivitamin can help prevent heart disease, strokes, cancer, osteoporosis & degenerative neurological diseases like parkinson's & alzheimer's. Even the conservative mainstream ama advises all adults take a multivitamin! it's important to choose a good one-see http://www.Multivitaminguide.Org/ see my comment for jama's research summary:.

Not Much: Multivitamins are not needed by most people on a regular American diet. If you are on a very strict diet, or are pregnant, or fighting a chronic disease, then they may be helpful. If you have a lab proven deficiency, then take that one only. The multivitamin industry benefits the seller only, and excess intact can easily be harmful. Save your money and buy a gym membership. Exercise helps health.