All of the following would decrease the glycemic index of a food except:
a. consuming whole kernels of grains versus milled or rolled grain kernels.
b. adding butter. increasing the ripeness of fruit.
c. adding grilled chicken.

b. adding butter. increasing the ripeness of fruit.

Explanation:

The addition of whole kernels helps to reduce the glycemic index (GI), because the larger the carbohydrate particle, the longer it takes the body to absorb it, decreasing the blood glucose peaks.

In addition, the addition of lean protein to meals helps to lower glucose spikes by reducing digestion time.

The addition of a fat like butter would not reduce the glycemic index due to its energy load (9 kcal per gram). In addition, increasing the ripeness of the fruit will also increase the GI.

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