People with type 2 diabetes are often warned against the consumption of high GI foods, such as white potatoes, especially at night as they tend to make it more difficult to control blood sugar levels. Glycemic Index (GI) is a measurement used to determine how certain foods raise our blood sugar. This is called our glycemic response.
Traditional guidelines for type 2 diabetes sufferers involve avoiding potatoes in order to avoid a sharp rise in blood sugar levels after eating. However, a recent study has shown that sufferers of type 2 diabetes need not avoid potatoes, as eating potatoes might in fact result in a desired glycaemic response.
Researchers investigated the impact of potato consumption as part of a mixed evening meal on nocturnal glycemic response.
Researchers undertook a study involving 24 males and females with type 2 diabetes in four experimental trials after consuming breakfast, lunch and dinner. Each meal consisted of 50% carbohydrates, 30% fat and 20% protein. Dinner included potatoes that were either boiled, roasted, boiled and cooled, or basmati rice. Blood samples were consistently taken before and after eating to monitor the participants.
The study concluded that there was no significant difference in glycemic response after eating high GI boiled or roasted potato-based meals compared to low GI basmati rice. On the contrary, it was found that eating potato-based meals at night had more favourable results than the low basmati rice.
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