Do you worry that your coffee habit is getting out of hand? Don’t put down that cup of joe just yet. Numerous research studies in recent months point to ways in which coffee may actually improve your health. Here are their findings:
It reduces your risk of premature death.
People who drink a moderate amount of coffee daily (fewer than five cups per day) have a lower risk of death from heart disease, neurological disease, type 2 diabetes and suicide, according to researchers from Harvard University. In a study published in the American Heart Association journal Circulation, the scientists looked at the effects of drinking caffeinated and decaffeinated coffee. They observed health benefits from both. This led them to believe that coffee’s protective effects come not from caffeine, but from other chemical compounds.
“Bioactive compounds in coffee reduce insulin resistance and systematic inflammation,” said study author Ming Ding, MD, in a news release from the American Heart Association. “They might be responsible for the inverse association between coffee and mortality.”
It reverses the effects of liver disease.
Scientists in Europe recently studied the effects of coffee on non-alcoholic fatty liver disease (NAFLD). When mice with a high fat diet were also given a daily dose of coffee, there was significant improvement in several markers for NAFLD. They also experienced less weight gain than other mice fed the same diet. The dose of coffee given was equivalent to 6 cups of coffee for a human weighing 155 lbs. The scientists concluded that coffee protects the liver from NAFLD because it reduces the permeability of the gut.
It prevents type 2 diabetes.
Three to four cups of coffee per day could reduce your risk of developing type 2 diabetes. In a report in the American Chemical Society’s Journal of Natural Products, scientists revealed that two naturally occurring compounds in coffee have an impact on insulin levels in the body.
Insulin is a hormone that the body produces to convert glucose from food into energy. People with type 2 diabetes develop a resistance to insulin. The pancreas then makes more insulin to overcome this resistance, but eventually it just can’t make enough. When there’s not enough insulin, the glucose can’t be converted to energy and remains in the blood. High blood glucose levels are dangerous and can lead to blindness, nerve damage, and other health issues.
The researchers discovered that two compounds in coffee, cafestol and caffeic acid, both increase insulin secretion when glucose was present. They also found that cafestol increased glucose uptake in muscle cells, leading to lower blood glucose levels.
It’s rich in antioxidants.
When researchers from Monash University in Australia observed the behavior of free radicals in coffee, they discovered that coffee acts as an antioxidant. Antioxidants are compounds found in food that keep free radicals in check and prevent them from inflicting damage on cells and DNA.
Free radical reactions may be responsible for most degenerative diseases, such as atherosclerosis, cancer, inflammatory joint disease, asthma, diabetes, senile dementia and degenerative eye disease. By stabilizing free radicals, the antioxidants in coffee may help to prevent these diseases and slow the aging process.
It lowers your risk of dying from heart disease.
Heart disease is the number one cause of death for both men and women in the United States, where it’s responsible for one in every four deaths. Drinking coffee may prevent this deadly condition. Researchers from the Institute for Scientific Information on Coffee report that three to five cups of coffee per day may reduce your risk of dying from cardiovascular disease by up to 21%.
Centers for Disease Control – “Heart Disease Facts”
Florence, TM. “The Role of Free Radicals in Disease.” Aust N Z J Ophthalmol. 1995 Feb;23(1):3-7.
News release: American Chemical Society
News release: American Heart Association
News release: European Association for the Study of the Liver
News release: Institute for Scientific Information on Coffee
News release: Monash University