Then we were told it was unsafe. Symptoms can be reduced by slow reduction over a few days. We've also heard that there are health risks, such as increased cancer risk, high blood pressure and birth defects. IFIC says there is no relationship between any of these health problems and caffeine use. However, North Florida Regional's Wellness Center says there are possible links with fibrocystic lumps and some birth defects.
Some researchers say there is a link between caffeine intake and reduced fertility.
The Archives of Internal Medicine say a very few sensitive individuals may experience a short rise in blood pressure, similar to climbing a flight of stairs. Caffeine is a mild stimulant drug. As with any drug, you can take too much and have scary side effects, so be careful popping Vivarin or No-Doz during finals week. Just one of these caffeine products can be equal to 6 or more cups of coffee. This will prevent a caffeine induced low blood sugar reaction that can cause shaking and the jitters.