The Recommended Dietary Allowance (RDA) for vitamin C depends on a handful of factors, including age and sex (for adults): 19 years and older: 90 mg for men, 75 mg for women (85 mg when pregnant and ...

An estimated 40 percent of Americans don’t get enough vitamin D, a nutrient linked to bone and muscle health. That includes a large number of seniors, and some past studies suggest that vitamin ...

Cancer researchers have homed in on how high-dose vitamin C kills cancer cells. Vitamin C breaks down to generate hydrogen peroxide, which can damage tissue and DNA. The new study shows that tumor ...