Nutritional supplements
Learning Center
Zinc for colds: The final word?
Everyone's heard of taking zinc for colds. But does it really work?
Vitamin D toxicity: What if you get too much?
Understand the risks of too much vitamin D, including a toxic reaction.
Vitamin D deficiency
What are the risks of too little vitamin D?
Valerian: A safe and effective herbal sleep aid?
Valerian — Can this sleep aid help you sleep better?
Too much vitamin C: Is it harmful?
Vitamin C is an essential nutrient, but too much carries its own risks.
Stuttering
Stuttering, sometimes called stammering, is a speech condition that involves problems with rhythm and flow when speaking.
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?
Prenatal vitamins: OK for women who aren't pregnant?
Prenatal vitamins: Why they might not be suitable if you're not pregnant.
Natural remedies for depression: Are they effective?
For some people, certain herbal and dietary supplements seem to help with depression, but more studies are needed on their effectiveness and side effects.
Multivitamins: Do young children need them?
Multivitamins: Are they good insurance for young children?
Refine Your Search
Type
Gender
Age
- All
- 19 to 44 younger
- 45 to 64 middle
- 06 to 12 years elementary/preteen
- 03 to 5 years preschool
- 13 to 18 years teen
- 2 years
- 65 to 80 older
- 19 to 28 young adult
Focus
- All
- Unproven treatment
- Causal Risk Factor
- Prevention
- Clinical Treatment