A recent study appearing in the Journal of the National Cancer Institute looked at the coffee-drinking habits of more than 447,000 people over 10 years. The researchers found that those who drank four or more cups of caffeinated coffee each day had a 20 percent lower risk of developing melanoma than people who drank decaffeinated coffee or no coffee.
Already think the benefits of coffee are endless? Well they pretty much are: It can even strengthen your DNA. A small 2014 study published in the European Journal of Nutrition found drinking coffee regularly significantly reduced the oxidative damage in the body’s white blood cells, which can hurt your DNA. Instead, the coffee—dark roast, in this case!—helped keep the DNA strong.
Increased coffee consumption may reduce risk of type 2 diabetes - the Harvard School of Public Health (HSPH) researchers gathered data from three studies. In these studies, the diets of the participants were evaluated using questionnaires every 4 years, with participants who reported having type 2 diabetes filling out additional questionnaires. In total, 7,269 study participants had type 2 diabetes.
Other studies have tried to tease apart which ingredients in coffee contribute to its health benefits. Those might include its antioxidants, which can combat cancer, and anti-inflammatory compounds, which can reduce the risk of chronic diseases such as heart conditions and even neurodegenerative disorders like Alzheimer’s, as well as the risk of liver diseases like cirrhosis and cancer.
Coffee is not traditionally thought of as anti-carcinogenic, but it has been linked specifically to the prevention of two types of cancer – liver and colorectal cancer, which are the 3rd and 4th deadliest forms of cancer, respectively. It has also shown good results in preventing the occurrence of melanoma in people who consume it regularly. Research says that coffee drinkers have 43% lesser risk of cancer than those who do not drink it.