In his research article in "The Daily Telegraph" Lane said that too often we forget that coffee and caffeinated beverages like tea and soft drinks comprise a powerful drug caffeine that interrupt glucose metabolism in a way that could harm type-2 diabetics.
International researchers confirmed that diabetics who gulp coffee daily not only boost their blood sugar levels but also nullify efforts to bring blood sugar under control.
The blood sugar levels of ten diabetic patients of an average age of 63 were monitored for 72 hours by the researchers using a novel technology where a tiny glucose monitor was embedded under the abdominal skin. They were given freedom to eat whatever they liked.
The average daily sugar levels of the diabetics went up by eight per cent when the participants consumed coffee or caffeinated beverages.
The researchers have published shocking results in the 'Diabetes Care' journal that said:
Drinking coffee after breakfast exaggerated blood sugar levels by nine per cent and coffee after lunch and dinner by 15 per cent and 26 per cent respectively.
Lane said that doctors might soon instruct diabetics to banish caffeine from their diets if further studies support the results.