What is the reported Glycemic Index (GI) for purple potatoes compared to white potatoes (GI 93)?
Answer
GI of 77
Purple potatoes demonstrate a superior profile regarding blood sugar impact compared to lighter varieties, as evidenced by their Glycemic Index (GI). The measured GI for purple potatoes is reported to be 77. This figure is demonstrably lower than the GI of yellow potatoes, which is noted as 81, and significantly lower than the GI of white potatoes, which stands at 93. This lower GI suggests that the polyphenols present in the purple flesh may work to slow the rate at which starches are absorbed in the intestines, resulting in a lessened spike in post-meal blood sugar levels.
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