Long-term diets including the yo-yo effect damage the heart and kidneys – FITBOOK

Constant crash diets and the resulting yo-yo effect don’t just affect the psyche. In the long run, there is a risk of damage to the heart and kidneys. This is the conclusion of a new study from the USA.

Jennifer Aniston once revealed in an interview that she basically went on a diet all the time in the ’90s to stay slim enough for her role on the TV series Friends. Her fellow actress Renée Zellweger is one of Hollywood’s most famous representatives. The fatal diet cycle of constant starvation and gaining weight again not only messes up the metabolism, but may also damage heart and kidney function. This is the result of a study by Georgetown University in Washington, which was presented at the current annual conference of the “American Physiological Society‘ was presented.

Rats put on a radical diet for several cycles

Most previous human and animal studies have only focused on the short-term effects of weight loss. However, little is known about how repeated cycles of weight gain and weight affect health in the long term. To find out more, the researchers divided 16 rats into two groups. The first group was fed normally, the second group was put on a radical diet (40 percent fewer calories) three times, followed by three cycles of normal food. to measure how well their bodies process sugar.

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How constant dieting affects heart and kidney health

It turned out that some values ​​deteriorated considerably in the diet rats. “We found that animals that went through multiple cycles of weight loss and body weight recovery ended up with decreased heart and kidney function. They also had greater insulin resistance, which may be a cause of diabetes,” explains study leader Aline de Souza in a publication.1 Even if the animals looked healthy on the outside, their heart and metabolic functions were massively damaged.

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Many diets may increase the risk of heart problems later in life

If you struggle from one diet to the next, you probably pay a higher price than the quality of life that suffers as a result. “We now need to continue researching whether people who follow strict diets several times in a row might develop heart problems later in life,” the scientist adds. Of course, a rat study cannot be transferred 1:1 to humans, but it does give important information. The more restrictive the diet, the more dramatic the potential health consequences. So there is much to indicate that crash diets in particular, which result in rapid weight loss, can actually permanently damage the heart and kidneys or even do so Diabetes trigger.

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Healthier and more effective: permanent change in diet

This study shows once again that crash diets are useless in the long term and can even be dangerous. A permanent change in diet is better, more effective and above all life-prolonging – with lots of vegetables, fruit, legumes and whole grain products. Meat and sugar should remain the exception. Unlike most diets, however, there are no prohibitions. A recent study from Norway was able to impressively prove that it is much more comfortable and healthier to reach your (weight) goal (FITBOOK reported).


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