Study Confirms That Processed Foods Key to Rising Obesity ‘Protein hunger’ drives overeating, a large-scale population study shows. Growing evidence that highly processed and refined foods are the leading contributor to rising obesity rates in the Western world is backed by a year-long study of
by professors Raubenheimer and Stephen Simpson, the Protein Leverage Hypothesis argues that people overeat fats and carbohydrates because of the body’s strong appetite for protein, which the body actively favors over everything else. Because so much of modern diets consist of highly processed and refined foods – which are low in protein – people are driven to consume more energy-dense foods until they satisfy their protein demand.
“Humans, like many other species, have a stronger appetite for protein than for the main energy-providing nutrients of fats and carbohydrates. That means that if the protein in our diet is diluted with fats and carbohydrates, we will eat more energy to get the protein that our bodies crave.”Protein essential to good health
They then plotted energy intake versus the time of consumption and found that the pattern matched that predicted by the Protein Leverage Hypothesis. Those who consumed lower amounts of protein in their first meal of the day went on to increase their overall food intake in subsequent meals, whereas those who received the recommended amount of protein did not – and, in fact, declined their food intake throughout the day.
Professor Raubenheimer and colleagues have seen this effect before in other studies for more than a decade, including randomized control trials.
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