Coffee and Health
Like so many of the beverages we enjoy today, coffee was once prescribed as a tonic for what ails you... and provided that what ails you is a lack of alertness or a sour mood, it's good on its promise. Let's leave patent medicines and snake-oil salesmen aside for the moment, though, and ask: is coffee good for you?
The answer is yes!
Coffee has been a frequent subject of scrutiny by the medical community... perhaps because it's so widely consumed, yet offers no apparent nutritive value. Or, maybe doctors are just looking for a really good cup of coffee.
Despite some 40-50 years of study, the medical field has yet to draw a direct correlation between moderate consumption of coffee and any medical disease or chronic health condition. Studies that have suggested worrisome links between coffee consumption and reproductive health, for example, have been put to rest by subsequent studies — larger, and more thorough — that have exonerated our favorite beverage.
More recent studies by the medical science community are now finding numerous positive benefits of moderate coffee consumption. These studies suggest that drinking coffee may reduce risks of colon cancer and liver cancer; cirrhosis of the liver; may reduce the risk of Parkinson's Disease and the onset of diabetes. More, brewed coffee has been found to have 3 to 4 times the amount of cancer-fighting anti-oxidants as green tea. Further, coffee can prevent or reduce the likelihood of developing gallstones, even prevent cavities.
Coffee and Caffeine
Coffee contains caffeine, a mild stimulant to the central nervous system. The caffeine in coffee occurs naturally; it's not added (it is, however, added to many soft drinks.) Coffee — with its stimulating constituent, caffeine — is the worlds most popular mood-altering substance on the planet, and has been for more than 300 years.
Caffeine promotes wakefulness by interfering with adenosine, a chemical in the body that acts as something of an natural sleep-promoting drug. In addition to its wakeful properties, caffeine — in moderate amounts — has been shown to enhance mood and increase alertness.
Caffeine has been shown to decrease muscle pain and augment the pain-relieving capability of other drugs, alleviate asthma symptoms and boost athletic endurance and performance as well as heightening alertness and lifting mood. Heck, it even helps combat jetlag! The key, of course, is the phrase we seem to hear a lot... moderation.
What's moderate? Most doctors will agree that 3 to 4 cups of coffee a day can be considered moderate consumption. What's moderate for you, however, is largely a matter of how you respond to caffeine. If you have questions or concerns about your own consumption of caffeine, talk to your doctor.
Coffee and Nutrition
Nutritionally speaking, brewed coffee is pretty much inert. It has virtually no calories or fats, no carbohydrates, no sodium, no cholesterol... if it were required to carry a nutritional product label, that label would consist mostly of a lot of zeros. (In fact, coffee is exempt from federal food label programs precisely because it has zero nutritive value.)
That said, coffee does offer a number of trace minerals (Thiamin, Niacin, Folate, Phosphorus, Magnesium, Manganese) and is a good source of Potassium, Pantothenic Acid and Riboflavin. A 6-ounce cup of brewed coffee may contain 2 to 4 mg of Sodium... mostly from the water used to brew the coffee and not the coffee, itself.
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