Nutritional supplements
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Probiotics and prebiotics: What you should know
Probiotics are foods or supplements that contain 'good' bacteria that might help treat or prevent illness. Should they be part of your diet?
Answer
Too much vitamin C: Is it harmful?
Vitamin C is an essential nutrient, but too much carries its own risks.
Answer
Vitamin D deficiency
What are the risks of too little vitamin D?
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Vitamin D for babies: Are supplements needed?
A Mayo Clinic specialist explains why, when and how to give your baby vitamin D.
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Vitamin D toxicity: What if you get too much?
Understand the risks of too much vitamin D, including a toxic reaction.
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