Diet & Nutrition
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Vitamins A to Z

Think you know your vitamins? Take our quiz to find out!

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Vitamins A to Z
Vitamins A to Z
Question 1 of 20 Correct

True or false: Every adult should take a multivitamin, because we cannot possibly eat all the foods it would take to get adequate nutrition in a day.

Correct! Sorry, that’s incorrect.

The correct answer is: This is false. If you eat a well-rounded, diverse diet rich in fruits, vegetables, whole grains, dairy products and meats, you may not need a multivitamin. But for most people a multivitamin can act as an insurance policy, making sure you're getting everything you need in case you can't eat the right kinds of food often enough.

Vitamins A to Z
Question 2 of 20 Correct

Which of these phases in life may require additional vitamin and nutrient supplementation?

Correct! Sorry, that’s incorrect.

The correct answer is: All of the above. Women who are pregnant and nursing and people who have become sick may need additional vitamin and nutrient supplementation to meet their bodies' nutrient requirements.

Vitamins A to Z
Question 3 of 20 Correct

True or false: You should split your multivitamin and take half in the morning and half at night.

Correct! Sorry, that’s incorrect.

The correct answer is: This is true. Split your multivitamin and take half with breakfast and the other half with dinner. Dividing the dose and taking them with food will help your body absorb the vitamins and minerals more easily.

Vitamins A to Z
Question 4 of 20 Correct

Which of these factors influences the recommended daily amounts of vitamins a person should get?

Correct! Sorry, that’s incorrect.

The correct answer is: All of the above factors influence a person's daily recommended intake for vitamins and minerals. Other factors that influence that number include overall health and sun exposure.

Vitamins A to Z
Question 5 of 20 Correct

Which of these vitamins does the body make naturally when exposed to the sun?

Correct! Sorry, that’s incorrect.

The correct answer is: The body naturally produces vitamin D when bare skin is exposed to sunlight. However, most people aren't in the sun long enough to get the benefits, and most parts of the country aren't sunny enough all year for people to produce vitamin D naturally. Most health organizations recommend getting vitamin D from a healthy diet that includes foods rich in vitamin D, foods fortified with vitamin D, milk and other beverages fortified with vitamin D and dietary supplements.

Vitamins A to Z
Question 6 of 20 Correct

True or false: 50 percent of Americans are vitamin D deficient.

Correct! Sorry, that’s incorrect.

The correct answer is: This is true. Half of Americans are vitamin D deficient. Groups most at risk include breastfed infants, older adults, obese people, people with limited sun exposure, people with dark skin or people with fat malabsorption.

Vitamins A to Z
Question 7 of 20 Correct

Which of these is a benefit of having adequate vitamin D levels?

Correct! Sorry, that’s incorrect.

The correct answer is: All of the above. Vitamin D can help your body absorb calcium more easily, which helps you create stronger bones. Vitamin D can also boost your immune system and reduce inflammation.

Vitamins A to Z
Question 8 of 20 Correct

Which of these vitamins can interfere with blood-thinning medication?

Correct! Sorry, that’s incorrect.

The correct answer is: Vitamin K may interfere with blood-thinning drugs such as warfarin (Coumadin) and increase the risk of clotting. If you are on a blood-thinning medication, talk with your doctor before you begin using a vitamin supplement.

Vitamins A to Z
Question 9 of 20 Correct

True or false: It's not possible to take in too many vitamins or minerals.

Correct! Sorry, that’s incorrect.

The correct answer is: This is false. When vitamins are consumed in excess of the body's normal needs, they may have drug-like effects and may also interfere with the effectiveness of standard medical treatments.

Vitamins A to Z
Question 10 of 20 Correct

Which type of vitamin can your body store for use later?

Correct! Sorry, that’s incorrect.

The correct answer is: Your body can store fat-soluble vitamins such as vitamins A, D, E and K. As a result, these vitamins may build up to toxic levels in the body if they are consumed in excessive amounts.

Vitamins A to Z
Question 11 of 20 Correct

Which of these is a sign of iron toxicity?

Correct! Sorry, that’s incorrect.

The correct answer is: All of the above are symptoms of iron toxicity, a condition that occurs when excess iron accumulates in the body instead of being excreted. Other symptoms of iron toxicity include diarrhea, vomiting of blood, dehydration, low blood pressure, shock, headache and bluish-looking lips and fingernails.

Vitamins A to Z
Question 12 of 20 Correct

Which of these supplements is important for women over 50 to take?

Correct! Sorry, that’s incorrect.

The correct answer is: Women over 50 should take all of the above: vitamin D, omega-3 fatty acids and a multivitamin. While you can get vitamin D and omega-3 fatty acids as well as the vitamins and minerals that are in a multi by eating a balanced diet, doing so can be difficult.

Vitamins A to Z
Question 13 of 20 Correct

Which of these B vitamins is critical to brain development in a growing fetus?

Correct! Sorry, that’s incorrect.

The correct answer is: Choline, a type of B vitamin, is critical for brain growth in a developing fetus. Most pre-natal vitamins will contain an extra dose of the B vitamins so the mother's body has enough to share with the developing fetus.

Vitamins A to Z
Question 14 of 20 Correct

Which of these B vitamins can help maintain memory and concentration?

Correct! Sorry, that’s incorrect.

The correct answer is: Folate is involved in the production of neurotransmitters, which are chemicals that move signals through your brain. People who are folate deficient may experience memory problems and trouble concentrating. (Folic acid, the synthetic form of folate, is often found in fortified foods and supplements.)

Vitamins A to Z
Question 15 of 20 Correct

Vitamin A is responsible for which of these bodily functions?

Correct! Sorry, that’s incorrect.

The correct answer is: All of the above. Vitamin A is a fat-soluble vitamin that helps keep your eyes healthy, regrows cells that are damaged from illness or injury and is essential to the function of your immune system. Vitamin A may also reduce the risk of cancer, but studies are mixed. People who eat more vitamin A in their diet seem to have a lower risk of certain cancers, but supplements appear to have no effect or can even be harmful.

Vitamins A to Z
Question 16 of 20 Correct

True or false: Taken together, vitamins C and E may make your cardiovascular system more healthy.

Correct! Sorry, that’s incorrect.

The correct answer is: This is true. Though studies have had conflicting results, some evidence suggests that taken together, vitamins C and E can reduce the amount of harmful buildup on the walls of your arteries and help keep the arteries relaxed and elastic.

Vitamins A to Z
Question 17 of 20 Correct

Which of these vitamins can help postmenopausal women maintain their bone strength?

Correct! Sorry, that’s incorrect.

The correct answer is: In one study, women who were given 1 milligram of vitamin K each day had less bone loss than women who didn't take vitamin K. Over time, that means your bones will stay stronger, and you'll reduce your risk of fractures from falls.

Vitamins A to Z
Question 18 of 20 Correct

True or false: Men and women can take the same multivitamin.

Correct! Sorry, that’s incorrect.

The correct answer is: This is false. Multivitamins are tailored to fit each gender's specific nutritional needs. For example, women's multivitamins will contain more iron than men's because that mineral is depleted during menstruation.

Vitamins A to Z
Question 19 of 20 Correct

Which of these vitamins is especially important for aging adults?

Correct! Sorry, that’s incorrect.

The correct answer is: As we age, our bodies become less able to absorb vitamins, especially B vitamins. That's why multivitamins for older adults often contain larger doses of B vitamins.

Vitamins A to Z
Question 20 of 20 Correct

True or false: Children rarely need a multivitamin.

Correct! Sorry, that’s incorrect.

The correct answer is: This is true. A lot of kids' foods are already fortified with extra vitamins and minerals, so if your child eats a well-balanced diet, she may not need a multivitamin. If you have a picky eater or don't trust that your child is getting enough nutrients, talk to your doctor about using a multivitamin.

Vitamins A to Z
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Vitamins A to Z
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