Coffee has so many advantages. Some recent studies (already given in previous issues of GEMS) have proved that coffee increases HDL cholesterol and decaffeinated coffee or tea decreases the risk of diabetes.

     But some patients say coffee causes their blood glucose to rise. Coffee without cream/sugar doesn't have any carbohydrates or calories. But still Caffeine impairs insulin action but not necessarily blood sugar (glucose) levels in young, healthy adults. However, if you have type 2 diabetes, the impact of caffeine on insulin action may be associated with a small but detectable rise in blood sugar levels, particularly after meals. About 250 milligrams of caffeine — or the equivalent of 2 to 2 1/2 cups (473 to 591 milliliters) of plain, brewed coffee — a day may cause this effect.

     If you have type 2 diabetes and you're struggling to control your blood sugar levels, limiting the amount of caffeine in your diet may provide a benefit.