The researchers were shocked. They couldn't believe the results they were looking at — yet there they were. So they ran the study again using a different batch grown in a different season. This tasty food isn't supposed to be packed with polyphenols. But, according to this research, it is.
The food is potatoes. And the results the researchers found are going to surprise you too.
Two scientists from McGill University, Stan Kubow and Danielle Donnelly and their associates, conducted this study. Dr. Kubow is the associate professor in the School of Dietetics and Human Nutrition. He's also an expert on polyphenols. Dr. Donnelly is an associate professor in the Department of Plant Science and an expert on potatoes. Together, they wanted to see what impact potatoes had on a high-fat diet.
To do the study, the researchers fed mice a diet designed to make them gain weight. They gave them the diet for 10 weeks. They gave both groups of mice the exact same diet, except one group received an extract high in polyphenols. And this extract came from 30 Irish potatoes. At the beginning of the study, the mice had an average weight of 25 grams. Every one of the mice gained weight. However, the control group gained an average of 16 grams, while the group that received the extract gained only 7 grams.
One of the study authors admitted, "We were astonished by the results. We thought this can't be right — in fact, we ran the experiment again using a different batch of extract prepared from potatoes grown in another season, just to be certain."
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The reason the second group of mice didn't gain as much weight was due to the polyphenols. Most people don't realize that potatoes are quite high in polyphenols. In fact, Dr. Kubow explains, "In the famous French diet, considered to be very healthy, potatoes — not red wine — are the primary source of polyphenols. In North America, potatoes come third as a source of polyphenols — before the popular blueberries." Surprised?
Of course, you can't eat 30 potatoes a day. You would gain weight with that many calories. But adding a potato to your diet isn't going to cause weight gain — unless it's fried. Boiled and baked potatoes are much healthier than fried potatoes. The lower temperatures won't destroy all of the polyphenols.
I think this is one area where the extract might work better than the whole food. The extract can isolate the polyphenols without adding all the potato starch. This extract could help prevent both obesity and type-2 diabetes. With that said, the takeaway from this study isn't so much about potatoes as it is about polyphenols. Getting plenty of these powerful plant compounds can help you lose weight. It's hard to find a potato extract on the market. But you can get all the polyphenols you need from a diet rich in fruits and veggies and by taking Advanced Polyphenol Formula.
Your insider for better health,
Steve Kroening, ND