Kenwick & Pawan

From time to time I stumble upon delicious lil nuggets of info like this one…

In the 1950s, two researchers-Professor Alan Kekwick and Dr. Gaston L.S. Pawan – jointly conducted a study to test the theory that differing proportions of carbs, fat, and protein might have different effects on weight loss, even if the calories were kept the same.

They put obese subjects on a 1,000-calorie diet but varied the percentages of protein, carbs and fats. Some subjects were on 90 percent protein, some were on 90 percent fat, and some were on 90 percent carbs. The subjects on the 90 percent protein diet lost .6 pounds per day; the ones on the 90 percent fat diet lost .9 pounds per day and the ones on 90 percent carbs actually gained a bit. Obviously, something other than calories is at work here.

Reinforcing these findings are similar studies with similar results In 1958, Dr. Richard Mackarness, the doctor who ran Britain’s first obesity and food allergy clinic, argues that it was carbohydrates, not calories, that were the culprit in weight gain.

MacKarness was the first to speculate that perhaps the reason some people simply couldn’t lose weight was because of a metabolic defect in their ability to process carbohydrates. In many ways, he foreshadowed the work in the latter part of the 20th century that led to the now-common concept of “Metabolic Syndrome” or “Syndrome X.”

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