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Moderate coffee consumption (3-4 cups per day) may have health benefits, including reducing the risk of cancer, diabetes, Parkinson’s disease, and gallstone disease, and increasing metabolism. However, excessive consumption can lead to negative effects such as increased blood pressure and heart rate, addiction, anxiety, and insomnia. Experts disagree on whether the benefits outweigh the risks.
Generations of coffee drinkers have been told to reduce the amount of coffee they consume based on the assumption that it is bad for their health. Much of the stigma around coffee has largely been based on the high amount of caffeine in the drink. Research has shown, however, that there may also be some health benefits to coffee when consumed in moderation – three to four cups a day. There is concern about too much coffee causing an increased heart rate, but some researchers believe that the health benefits of coffee might outweigh the risks. Some of the health benefits of coffee may include a reduced risk of cancer, diabetes, Parkinson’s disease, and gallstone disease, as well as an increased rate of metabolism.
Research has shown that coffee might have anti-cancer properties. Some studies indicate that the risk of liver cancer is reduced by 50 percent. Research also shows some correlation in reducing other cancers, such as colon and breast cancer.
The health benefits of coffee for diabetes are believed to be twofold. Research has shown that it could reduce the risk of diabetes by up to 50 percent. Another effect of coffee is to increase your resting metabolic rate and possibly lower your blood sugar count. This can improve the health of diabetics, as well as prevent the onset of this disease in unaffected people.
Coffee is also believed to play a role in protecting men against Parkinson’s disease, and regular coffee drinkers are less likely to suffer from symptoms of gallstone disease. This could be because coffee alters the cholesterol content of the bile produced by the liver.
Despite the evidence that coffee has some health benefits, experts disagree on whether those benefits outweigh the risks. Among the negative effects of coffee, especially when consumed in large amounts, are believed to be increased blood pressure and heart rate, an irregular heartbeat, addiction, anxiety, irritability, and insomnia. Additionally, some studies have shown a connection between coffee and cardiovascular disease, indigestion, heartburn, osteoprosis in postmenopausal women, and worsened symptoms of premenstrual syndrome (PMS). Research also suggests that coffee might reduce fertility in women trying to conceive.
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