Since coffee is high in caffeine, and caffeine boosts heart rates and raises blood pressure, scientists had worried that coffee drinking might contribute to higher rates of heart disease. A smaller, earlier study had suggested just that, but the concern now seems alleviated, both by the Harvard research and a second study by the Kaiser Permanente health care organization in California. This is not to say that there aren't physical effects to coffee drinking. Small amounts of caffeine spur brain cells, helping to improve concentration and reaction time and to relieve drowsiness and fatigue. But too much caffeine can often lead to irritability and restlessness and the inability to sleep.
Caffeine also stimulates more frequent urination, as any coffee drinker knows.
But earlier suspicions that coffee might be linked to bladder cancer have been dispelled by recent research. Still, not everyone can drink coffee with impunity. Pregnant women raise their risk of miscarriage 22 percent with just one eight-ounce cup of coffee daily. Compared to other beverages you buy and drink away from home, coffee is a better value. Use our customized Lycos search to linkthink your way around the web, or feel free to consult the experts about the above topic.