Caffeine Ingestion Before an Oral Glucose Tolerance Test Impairs Blood Glucose Management in Men with Type 2 Diabetes
Caffeine is known to stimulate the adrenal glands to release medullary products (adrenalin/epinephrine) and this will cause an increase in glucose floating in the bloodstream. It may be by this mechanism that caffeine ingestion in this study blunted the body’s ability to get glucose out of the bloodstream. So, those of you out there that describe “coffee” as your breakfast, you may be doubly shooting yourself in the foot–release of adrenalin to break down lean muscle mass so the brain has fuel to function on, and caffeine to make sure that glucose hangs around in the bloodstream longer–not a good combination. Caffeine Ingestion Before an Oral Glucose Tolerance Test Impairs Blood Glucose Management in Men with Type 2 Diabetes — Robi.