Let’s flip an old saying on its head: What you do know can hurt you! When it comes to your health, a lot of information has been around for so long, it’s blindly accepted. So here are the facts behind a few old health myths, courtesy of MSNBC:

• Myth #1: Vitamin C prevents the common cold. That’s True. In a recent study, people who consumed the amount of Vitamin C in 2 glasses of orange juice every day cut their risk of colds by two-thirds.
• Carrots are good for your eyes. Again True – but so are sweet potatoes, pumpkins, cantaloupe, and apricots. Basically, all orange fruits and veggies contain beta-carotene, which improves night vision and keeps other chemicals from “fogging up” the lenses of your eyes.
• Health myth #3: Coffees stunts your growth. That’s False. Coffee consumption has no effect on height. But what will stunt a kid’s growth is drinking soda. Studies show that when children replace calcium-rich foods with sugary soda, they run the risk of shorter and weaker bones.
• If you’re pregnant, you’re eating for two. Nope. Over the course of a pregnancy, a woman only needs an extra 70-thousand calories.
  That may sound like a lot, but spread out over 9 months, that’s less than an extra 250 extra calories a day.   
• And the final health myth: After eating, wait 30 minutes before you swim or you’ll cramp up and drown. That’s False. There’s no scientific research that suggests having food in your stomach causes cramps. And jumping in for a swim is a great way to burn calories.