Filtering out the biggest caffeine-related myths:

1. Caffeine doesn’t cause dehydration. It’s a mild diuretic and can make you need to urinate but the fluid content tends to offset the effects of losses.
2. Caffeine isn’t bad for your health…in moderation. Sticking to 400mg a day has no lasting damage on the body.
3. Caffeine does not aid weight loss. The only way to increase your metabolism is by building more muscle and exercising.
4. Caffeine is not addictive. Like shopping or watching tv, it is habit-forming rather than addictive.
5. Caffeine does not increase the risk of cardiovascular disease or raise cholesterol levels. You may notice a slight raise in blood pressure if you are sensitive to caffeine, though.