It's one of the oldest drugs on the market that's readily available and very addictive: caffeine. But conflicting information about caffeine abounds. "Good Morning America" medical contributor Dr. Marie Savard busted five common caffeine myths.
True or False?
1. Caffeine dehydrates you.
Savard says for caffeine to cause you to lose excess salt and urine, you'd have to take a lot. It would have to be within a short period of time. If you have a cup of coffee, it's not going to...Full Story