Why some people do not gain weight no matter what they eat?
It is one of life’s biggest grievances: it is incomprehensible that baffles many around the world, why some people have to watch what they eat to maintain their weight while others eat as much food as they like without any effect on weight, what is the secret?
Kathleen Melanson (professor of nutrition and food science at the University of Rhode Island in the United States) said that there is no simple answer to this question, as there are genetic, dietary and even behavioral factors involved, and the extent of the influence of each of these factors varies in any individual, and one of the most important factors is irrelevant. By body type or metabolism, which is cognition, Melanson says that many people who seem to eat what they like without gaining weight actually eat no more than the rest of us. For example, your friend who eats ice cream every day naturally may compensate for those extra calories by eating less at another meal, eating fewer snacks during the rest of the day, or maybe when they eat pizza they eat slowly and get full and then stop after slices. Just a few.
Physical activity can also make a difference, but it doesn’t have to be exercise in the gym, as Melanson said, « Some people move more even if they aren’t necessarily athletes. »
For example, they may be restless, have an active job, or spend the whole day chasing their children, Melanson explains that there is evidence that some people have a genetic predisposition to wanting to move their bodies, and this additional movement can also lead to an increase in the body’s metabolic rate, or The amount of energy that your body spends throughout the day except for exercise, and the more you move, the more mitochondria within muscle cells, the number and activity of which will increase, and these are the power plants that use energy for movement, and more mitochondria means burning more calories.
According to Dr. Ines Barroso (a researcher at the University of Cambridge in England who studies the genetics of obesity), there is little evidence to suggest that – without exercising – some people burn more calories than others, and Melanson adds that there may be physiological differences that allow some People naturally reduce the number of calories they consume without exercising significant self-control, so cascades of nervous system signals and hormones circulating in our blood interact to tell us when we feel hungry or full, and this is called the regulatory system for appetite, and it may be more sensitive for some people than Others.
One of the important hormones involved in this system is leptin, which helps regulate the amount of food we want to eat over longer periods of time and not just for our next meal.
Genetics can play a role in a person’s tendency to gain or lose weight, and researchers have identified more than 250 different DNA regions associated with obesity, according to a 2019 study published in PLOS Genetics.In this study, researchers compared 1,622 healthy people with a low body mass index (BMI). BMI) compared to 1985 obese subjects and 10,433 people of normal weight, and they found that lean participants had fewer genes associated with obesity, but according to Barroso, who was a co-author in the study, genes alone do not determine your weight, and Barroso said: We find genes that exclusively protect against obesity or predispose a person to obesity, and it seemed like a continuum. ”“ You also have people who have the genetic determinants of obesity but are not obese. ”
In the end, the answer is complex: our tendency to gain weight or maintain our weight is not predetermined, but it is also not completely under our control, as there is no genetic switch that allows some people to eat whatever they want without gaining weight, and at the same time the tendency to Weight gain isn’t necessarily due to a lack of self-control, Melanson says.
Why some people do not gain weight no matter what they eat 2020?
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