Looking at individual studies won't determine if vitamin supplementation is good for you. They're scientifically dense and the conflicts of interest can be very hard to spot.

"Systematic review papers" are much better suited for that. This is where independent scientists gather up all the available data and re-analyze it to answer big questions.

• If you are healthy, and have a modern balanced diet, taking multi-vitamins and high-dose antioxidants may shorten your life.
• There’s no evidence to support antioxidant supplements for primary or secondary prevention of diseases.
• Beta-carotene and vitamin E seem to increase m...