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From Illinois, USA:

Part of a recent answer stated that "food usually raises blood sugar, but water alone, or alcoholic beverages, usually lowers blood sugar." Can you explain the lowering effect of water alone?


Drinking a lot of water lowers blood sugar by:

  1. diluting the blood a bit, and
  2. forcing extra urination (and the extra urine drags out some extra sugar with the water that's excreted)
(You didn't ask, but alcohol lowers blood sugar levels by effects on the liver.)


Original posting 25 Jan 97


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