A Low-Calorie Diet Could Lead to a Longer Life

by Shirley Johanna on  June 30, 2016 at 5:18 PM Diet & Nutrition News
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A high-calorie diet can lead to many health issues such as obesity, heart disease, and diabetes, leading to shortened lifespan. But restricting calorie intake below normal diet could extend life, says a new study.
A Low-Calorie Diet Could Lead to a Longer Life
A Low-Calorie Diet Could Lead to a Longer Life

In an animal study, scientists now report in ACS' Journal of Proteome Research the metabolic reasons why these opposite diets may lead to such differences in longevity.

Calorie restriction with proper nutrition seems to help extend lifespans and delay the onset of age-related disorders by reducing what are called reactive oxygen species in the body.

Research has shown that calorie restriction changes the levels of hormones and lipid metabolites, and alters energy metabolism. However, scientists still do not know the precise biochemical changes the body undergoes during calorie restriction, and no one has determined its long-term effects. So Huiru Tang, Yulan Wang, Yong Liu and colleagues set out to investigate the metabolic responses of mice placed on long-term, calorie-restrictive diets.

The group divided mice into four dietary categories -- low-fat, low-fat with calorie restriction, high-fat and high-fat with calorie restriction -- for more than a year. They then used nuclear magnetic resonance analysis to examine the metabolic effects in blood and urine samples.

The researchers found that calorie restriction had a much bigger effect on metabolic outcomes than the amount of fat in the diet. Mice on higher calorie diets had increased oxidative stress, disturbed lipid metabolism, suppressed glycolysis and altered gut-microbial metabolites compared to those on the calorie-restricted regimens.

Source: Eurekalert

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