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Lose Weight with High-Fat Diet!

A carefully scheduled high-fat diet prevents obesity and can actually lead to weight loss, a Hebrew University researcher says.
By Tzvi Ben Gedalyahu
First Publish: 9/12/2012, 10:07 AM

Prof. Oren Froy
Prof. Oren Froy
Israel news photo courtesy of Hebrew U: Sasson Tiram

A carefully scheduled high-fat diet resets metabolism, prevents obesity and can actually lead to weight loss, a Hebrew University researcher says.

Ingested fats are not stored, but rather used for energy at times when no food is available, according to the research carried out by a team headed by Professor Oren Froy, of the Faculty of Agriculture, Food and Environment.

The results were published in an academic journal of the he Federation of American Societies for Experimental Biology.

Previous research has established that disrupting mammals’ daily rhythms, or feeding them a high-fat diet, disrupts metabolism and leads to obesity. The researchers wanted to determine the effect of combining a high-fat diet with long-term feeding on a fixed schedule. They hypothesized that careful scheduling of meals would regulate the biological clock and reduce the effects of a high-fat diet that, under normal circumstances, would lead to obesity.

For 18 weeks, they fed a group of mice a high-fat diet on a fixed schedule, eating at the same time and for the same length of time every day. They compared these mice to three control groups: one that ate a low-fat diet on a fixed schedule, one that ate an unscheduled low-fat diet (in the quantity and frequency of its choosing), and one that ate an unscheduled high-fat diet.

All four groups of mice gained weight throughout the experiment, with a final body weight greater in the group that ate an unscheduled high-fat diet.

The mice on the scheduled high-fat diet had a lower final body weight than the mice eating an unscheduled high-fat diet. But surprisingly, the mice on the scheduled high-fat diet had a lower final body weight than the mice that ate an unscheduled low-fat diet, even though both groups consumed the same amount of calories.

In addition, the mice on the scheduled high-fat diet exhibited a unique metabolic state in which the fats they ingested were not stored, but rather utilized for energy at times when no food was available, such as between meals.

According to Prof. Froy, “Our research shows that the timing of food consumption takes precedence over the amount of fat in the diet, leading to improved metabolism and helping to prevent obesity. Improving metabolism through the careful scheduling of meals, without limiting the content of the daily menu, could be used as a therapeutic tool to prevent obesity in humans.”