The sharper the increase in glycaemia after a meal, the more insulin is released, which then causes a sudden drop in glucose levels, even to below the initial level.

This has two implications:

  1. a large part of the glucose is not used but stored straight away as fat in the fatty tissue;
  2. the return to low glycaemic levels too quickly creates a lack of fuel in the body and stimulates the feeling of hunger, and thus the intake of more food.

This then creates a paradoxical situation: consuming excess glucose leads to it being quickly added to fat stores; the subsequent lack of fuel then leads to further intake of energy resources in the form of food, by stimulating the appetite.