Type 2 Diabetes
Large observational studies have repeatedly found that regular coffee drinkers tend to have a lower risk of developing type 2 diabetes.
Interestingly, similar associations have sometimes been observed with decaffeinated coffee, suggesting that compounds other than caffeine may contribute.
Coffee contains polyphenols and other plant compounds that may influence glucose metabolism and inflammation.
Still, coffee should not be used as a diabetes-prevention treatment on its own.
Maintaining a balanced diet, staying physically active, managing body weight when appropriate, and following medical advice remain much more important.