For example, coffee may stimulate the production of bile acids and speed digestion through the colon, which can lower the amount of carcinogens to which colon tissue is exposed. Does the benefit stem from the caffeine or plant compounds in the coffee bean? Is there a certain amount of coffee needed a day to produce a health benefit?Ĭoffee may affect how cancer develops, ranging from the initiation of a cancer cell to its death. Still, the cumulative research on coffee points in the direction of a health benefit. Low to moderate doses of caffeine (50–300 mg) may cause increased alertness, energy, and ability to concentrate, while higher doses may have negative effects such as anxiety, restlessness, insomnia, and increased heart rate. Human response to coffee or caffeine can also vary substantially across individuals. What defines a cup is the type of coffee bean used, how it is roasted, the amount of grind, and how it is brewed. The cup of coffee you order from a coffee shop is likely different from the coffee you brew at home. Coffee and HealthĬoffee is an intricate mixture of more than a thousand chemicals. A moderate amount of coffee is generally defined as 3-5 cups a day, or on average 400 mg of caffeine, according to the Dietary Guidelines for Americans. One 8-ounce cup of brewed coffee contains about 95 mg of caffeine.
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