Harmful "healthy" products
Scientists have proven that dietary products cause obesity
Some "dietary" products turned out to be more dangerous than their "fatty" counterparts, as they contain a lot of sugar and cause irreversible changes in the liver and brain, scientists say in an article published in the journal Physiology & Behavior (Sen et al., Diet-driven microbiota dysbiosis is associated with vagal remodeling and obesity).
"Many "low-fat" dietary products contain a lot of sugar and are disguised as healthy food, using bright packaging and beautiful names. In fact, they harm the liver just as much as fatty foods, and contribute to the development of obesity to no lesser extent," Krzysztof Czaja from the University of Georgia at Athens said (in a press release 'Diet' products can make you fat, study shows – VM).
In recent decades, many products and beverages have appeared on the shelves of stores, which manufacturers call "dietary" and which allegedly do not contain fats or sugar. Their appearance and advertising did not slow down the pace of the spread of the obesity epidemic around the world, and by 2030, as scientists expect, more than a third of the inhabitants of the developed world will suffer from excess weight.
Chaya and his colleagues decided to find out why this is happening, and began to observe the life of several groups of rats. They fed some of the rodents with ordinary food, and others with high–calorie fatty foods or dietary products with a high proportion of carbohydrates and almost complete absence of fat.
A month after the start of the experiment, the scientists weighed the rats, measured the proportion of fat and muscle in their body and checked all other vital signs, including the composition of microflora, blood content and predisposition of different parts of the body to inflammation.
As it turned out, there were actually no differences in the functioning of the body in animals that ate fatty foods and "diet" foods with a lot of sugar. Both of them began to gain weight, fat began to accumulate in the liver. But in the brain and intestines of rats on a diet, scientists have recorded many traces of chronic inflammation. Nothing like this happened in the body of those animals that ate normal balanced food.
According to the scientist, the refusal of such a diet did not lead to the disappearance of foci of inflammation, which suggests that such effects are either irreversible or very long-term. According to the biologist, this is due to the fact that the transition to "dietary" nutrition significantly changed the composition of the intestinal microflora of rats, making it more prone to cause inflammation.
"What is most worrying: all these effects occurred in the body of rats that ate a "normal" amount of calories, comparable to how much rodents from the control group ate. It turned out that when eating "dietary" food, the body produces fat twice as efficiently as in all other cases. In other words, the rats needed half as many calories on such a diet to get as fat as their relatives who ate fatty foods," concludes Chaya.
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27.04.2017