The source is from an article from the Annals of Internal Medicine specifically:
- the 161,808 postmenopausal women enrolled in the Women's Health Initiative Study that took multivitamins there was no protective effect from common forms of cancer, heart attacks, or strokes.
- during the eight years of observation, the numbers of deaths were the same between women who took and did not take vitamins.
There were situations, however, which are still every important vitamins are taken. These are:
* Folic acid supplements in women who are pregnant or plan to become pregnant can help to prevent serious neural-tube defects that affect the baby's brain and spine.
* Supplements that contain more vitamin D and calcium than is present in regular multivitamin pills can help older men, and especially women, avoid osteoporosis and bone fractures.
* Supplements of vitamins C and E, beta-carotene, zinc, and copper may slow the progression of vision loss in people with early macular degeneration.
Check with your doctor to see if multivitamins are necessary or a waste of your money and time.