Saturday, 9 October 2010

Glycemic index - white bread is better for you than parsnips

The Glycemic Index has been very helpful! White bread is high is GI but what is it? "The glycemic index (GI) is a ranking of carbohydrates on a scale from 0 to 100 according to the extent to which they raise blood sugar levels after eating. Foods with a high GI are those which are rapidly digested and absorbed and result in marked fluctuations in blood sugar levels. Low-GI foods, by virtue of their slow digestion and absorption, produce gradual rises in blood sugar and insulin levels, and have proven benefits for health. Low GI diets have been shown to improve both glucose and lipid levels in people with diabetes (type 1 and type 2). They have benefits for weight control because they help control appetite and delay hunger. Low GI diets also reduce insulin levels and insulin resistance."

White bread has a high GI (ranging from 70-89) but I wonder what foods are also high in GI... I looked through the glycemic index database for any foods higher than 80. Listed below are the ones which I found most shocking... White bread is pretty good compared to parsnips eh?
  • potatoes - 96-98
  • brown rice - 87
  • kelloggs cornflakes - 93
  • cereal fruit bars - 90
  • lucozade - 95
  • parsnips - 97

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