Scientists have long known a reliable way to prolong the life of rodents and other laboratory animals: reduce their calories consumed by 10-40%. Two years later, a group of researchers from Duke University in the United States summed up the results of testing this theory in humans and concluded that the rejection of 300 extra calories daily contributes to improving the health of the average person.
The study was funded by the US National Institutes of Health and published in the prestigious medical journal Lancet Diabetes & Endocrinology. Briefly about him tells The New York Times.The study involved 143 people aged 21 to 50 years. For two years they were instructed to practice the reduction of calories in the daily diet. At the same time they could eat all the same familiar food, simply reducing its amount by 25%. True, many have not reached this indicator.
On average, research participants reduced calorie content by 12% (approximately 300 kcal or just a few chocolate cookies). But it also had a beneficial effect on cardiovascular and metabolic health markers: cholesterol and blood sugar levels improved, blood pressure dropped slightly, and inflammatory processes decreased. In addition, many have lost weight (an average of 7 kg in two years) and burned excess fat. The control group of 75 people who did not practice calorie reduction had no such effects.
Despite the fact that research participants went through an intensive training program, learned how to prepare low-calorie breakfasts, participated in group classes and were regularly noted by experts, they could not reach the target calorie reduction of 25%.
Unfortunately, for the biennial study, scientists were unable to figure out how beneficial their goal will affect a person’s life expectancy. For this they would need to keep people on a similar diet for decades. Nevertheless, the researchers hope to meet with the participants in ten years to once again inquire about their health and diet.