Caffeine could interfere with the body's ability to handle blood sugar. At least 90 percent of the 17 million Americans diagnosed with diabetes have type 2, in which the body either does not produce enough insulin or cells ignore the insulin, which the body needs to convert food into energy.
More blood was taken then and after giving the volunteers a liquid meal supplement. Caffeine had little effect on glucose and insulin levels when the volunteers fasted, the researchers found, a TV channel reported.
But after the liquid meal, those who were given caffeine had a 21 percent increase in their glucose level and insulin rose 48 percent. "It seems that caffeine, by further impairing the metabolism of meals, is something diabetics ought to consider avoiding.
Some people already watch their diet and exercise regularly. Avoiding caffeine might be another way to better manage their disease. In fact, it's possible that staying away from caffeine could provide bigger benefits altogether."