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‘Diet’ foods can make you fat

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New York: ‘Diet’ foods – high in sugar but low in fat – may contribute to unwanted weight gain and a host of other problems such as liver damage and brain inflammation, a new study warns.

Researchers from University of Georgia in the US monitored body weight, caloric intake, body composition and fecal samples in three groups of rats over a four-week period.

One group of test subjects consumed a diet high in fat and sugar, another group was fed a low-fat, high-sugar diet and a third group was given a balanced or “normal” diet.


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Researchers found that both the low-fat, high-sugar and high-fat, high-sugar groups displayed an increase in liver fat and significant increases in body weight and body fat when compared to the balanced diet group.

Liver fat accumulation was significant in the high-sugar, low-fat group, researchers said.

Rats fed a diet high in sugar but low in fat – meant to imitate many popular diet foods – increased body fat mass when compared to rats fed a balanced rodent diet, researchers said.

The high-sugar diet induced a host of other problems, including liver damage and brain inflammation. “Most so-called diet products containing low or no fat have an increased amount of sugar and are camouflaged under fancy names, giving the impression that they are healthy, but the reality is that those foods may damage the liver and lead to obesity as well,” said Krzysztof Czaja from University of Georgia.

“What is really troubling in our findings is that the rats consuming high-sugar, low-fat diets did not consume significantly more calories than the rats fed a balanced diet,” Czaja said.