High doses of vitamin A or its precursor (beta-carotene) may raise the risk of all but one of the following. Which one?
- colon cancer
- lung cancer
- liver damage
- birth defects
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Question of the Day
A deficiency of which nutrient can’t be detected by a blood test?
- vitamin B-12
- vitamin D
- zinc
- iron
All but one of the following appear to help strengthen bones. Which one doesn’t?
- vitamin D
- vitamin K
- vitamin E
- fluoride
According to the latest estimates, how much vitamin C do most people need each day?
- 60 mg
- 200 mg
- 500 mg
- 1,000 mg
- 5,000 mg
Which is the best source of vitamin E?
- whole-wheat bread
- olive oil
- broccoli
- almonds
- beans
Though the evidence is sometimes shaky, too much iron can raise the risk of all but one of the following. Which one?
- memory loss
- heart disease
- cancer
- liver damage
What’s the maximum daily dose of calcium that’s considered safe?
- 1,500 mg
- 2,500 mg
- 3,500 mg
- 4,500 mg
- no limit
