If you hated carrots as a kid, you probably got plenty of finger-wagging from various adults, all of whom had the same kernel of truth: you have to eat them, because they’re good for your eyes. But, like most things adults told you when you were a tyke, you probably disregarded it as a mythical mantra, mean to make you miserable, according to the blog Blisstree.

Taking vitamin D supplements to compensate for vitamin D deficiency didn’t improve cholesterol  — at least in the short term, according to new research in Arteriosclerosis, Thrombosis and Vascular Biology, an American Heart Association journal.

Taking large doses of vitamin C may moderately reduce blood pressure, according to an analysis of years of research by Johns Hopkins scientists.

Overall, the U.S. population has good levels of vitamins A and D and folate in the body, but some groups still need to increase their levels of vitamin D and iron, according to the Second National Report on Biochemical Indicators of Diet and Nutrition, just released by the Centers for Disease Control and Prevention.