By drinking caffeinated or decaffeinated coffee on a regular basis, one can potentially reduce their risk of developing type 2 diabetes. The reduced risk is associated with drinking multiple cups, as many as six a day. It is believed that the antioxidants, such as CGA, found in coffee beans are at least partially responsible for these lower rates. According to some studies, CGA may even help keep insulin levels even.
One of the benefits of coffee beans is that they contain an antioxidant called chlorogenic acid (CGA) in addition to other antioxidants. Raw beans contain roughly 9 percent CGA by weight, which can help with weight loss and is a neuroprotectant. Coffee beans also help reduce inflammation, which is associated with a number of health concerns. In addition, the caffeine in coffee beans provides benefits such as reducing headaches. Understanding these health benefits can help coffee-drinkers appreciate more than just the taste of their next cup of java.
"My guess is that they're working together to have some of these benefits," Harvard researcher Walter Willett, who authored a similar study that found a link between coffee consumption and lower risk of early death, told NPR in 2015. “The coffee bean itself is loaded with many different nutrients and phyto-chemicals,” many of which aid in insulin resistance and inflammation reduction.
Malignant melanomas are the most dangerous and potentially life-threatening form of skin cancer and one of the most common cancer types in the United States. Studies have found that there is potentially as much as a 20 percent lower risk when a person drinks a minimum of four cups of coffee daily. The type of coffee matters here, as the study showed that decaffeinated coffee was not as effective. Studies on non-melanoma cancer and coffee have shown that people were 17 percent less likely to develop the most common form of skin cancer, basal cell carcinoma, if they drank three or more cups of coffee daily.