More than half of us take at least one vitamin supplement every day. But, how much do we really know about them? Here’s a True/False test to analyze your knowledge:

  • First: True or False: Everyone should take a multivitamin. That’s False. Dr. Laura Knobel is a board member with the American Academy of Family Physicians. And she says that the best way to get nutrients is to eat a healthy, well-balanced diet. That’s because people who rely on pills are more likely to skip meals, and eat foods that are full of highly-processed carbs and fats, thinking the vitamin will make up for what they’re lacking.

  • The next True/False question: Vitamins can affect prescription drugs. True. In fact, it’s incredibly dangerous. For example, vitamin K can interfere with drugs that prevent blood clots. And some B vitamins make antibiotics ineffective. That’s why it’s imperative to check with your doctor or pharmacist before taking any supplements.

  • Vitamin question #3: More means better. Nope. Dr. Conrad Flick is a professor at Duke University Medical School. And he says that taking mega-doses of some vitamins can cause kidney stones, nerve damage, birth defects, even death! So, follow the Federal recommendations.

  • The final True/False question: Vitamins help prevent cancer. Also False. Dr. Eric Jacobs is a vitamin specialist with the American Cancer Society. And he says there’s no magic bullet for preventing cancer. In fact, a study in the Journal of the American Medical Association showed that men who take high daily doses of vitamin E have a greater risk of developing prostate cancer.