The study found that there is a relationship between weight and life expectancy. Don't compete with weight after the age of 60. 'Slightly fat' is actually better
Xiaoling is 35 years old this year. She is a proper foodie. What makes many people envious and hate is that although Xiaoling eats a lot, she doesn't get fat no matter how much she eats. The more she eats, the slimmer she becomes . She also often goes to dinner with her colleagues at work. Because she eats a lot, she is even joked by her male colleagues, "Aren't you afraid of gaining weight after eating so much?"
Xiaoling is also very carefree, and every time she responds, "I have a physique that doesn't gain weight by eating alone, don't envy me".
Who knows, Xiaoling woke up one morning and found that she was weak all over. When she looked in the mirror, she felt a lump on her neck. She went to the hospital for a check and found out that it was hyperthyroidism.
After listening to the doctor's explanation, Xiaoling realized that the "culprit" that she did not gain weight by eating alone was hyperthyroidism!
1. Why do some people eat without gaining weight?
I don’t know if you have such friends around you. When you go out to dinner, no matter how much you eat, you will not gain weight, but if you drink water, you will gain weight... Why is there such a big difference between people?
A Yale University study published in Science Advances found that lipid metabolism in hypothalamic astrocytes plays a decisive role in susceptibility to diet-induced obesity .
Specifically, astrocyte-specific knockout of Angptl4 prevented high-fat diet-induced changes in mitochondrial morphology in hypothalamic astrocytes and increased the perinuclear glial surface layer of POMC, preventing diet-induced changes in mitochondrial morphology. of obesity.
In turn, astrocyte-specific loss of Pparγ increases susceptibility to high-fat diets, alters the integrity of hypothalamic circuits, increases appetite, and leads to weight gain.
Of course, not only eating lightly but not gaining weight is related to the brain, but also to factors such as genes, high basal metabolism, poor gastrointestinal absorption, fast digestion, and too much activity .
It should be noted that if there is a sudden "eating without fat" situation, you also need to be alert to the possibility of disease.
Especially hyperthyroidism, diabetes, and digestive system diseases such as irritable bowel syndrome, indigestion, chronic enteritis, and even cancers such as liver cancer and stomach cancer.
Second, obesity is all "eat" out? 3 reasons are also accomplices
Some people say that obesity comes from eating, and that being unable to control one's mouth is the main reason.
In fact, obesity can be divided into simple obesity and secondary obesity. Among them, simple obesity accounts for about 99%, and the etiology is not yet clear, which may be related to genetics, diet, exercise and other factors; secondary obesity is relatively rare, accounting for about 1%, which refers to obesity caused by other diseases.
In theory, obesity is a state caused by excessive accumulation of fat in the body, which is mostly related to excessive food intake or changes in body metabolism .
But in fact, the reasons for obesity are not so simple. At present, many studies have found that obesity may also be related to the following factors:
1. Intestinal flora
A study published in The Lancet Diabetes and Endocrinology found that Ruminococcus in the gut microbiota was associated with multiple features of the metabolic syndrome, and body mass index and C-reactive protein had no effect on Ruminococcus, with no reverse causality .
2. Brain disease
Research published in the journal Science Advances by Baylor College of Medicine in the United States shows that obesity is a neurodevelopmental disease, and the molecular mechanism of early brain development. may be a major determinant of obesity risk.
3. Too many private cars in China
A study published in the British Medical Journal by the University of California, Berkeley, and Renmin University of China found that the increase in Chinese people buying cars is an important cause of obesity. The researchers pointed out that car ownership reduces physical activity, which can lead to weight gain.
Third, weight determines life expectancy? This weight is healthier
Weight not only affects your appearance, it also determines your lifespan.
The Ohio State University study, published in the Annals of Epidemiology, surveyed 4,576 participants over 73 years.
The results showed that people who were able to maintain a normal weight when they were young and those who were slightly obese in old age (after the age of 60) had lower mortality rates .
In addition, a number of studies have also shown that there is a significant relationship between body weight and mortality, and slight obesity is a more appropriate physiological state.
The reason is that with the growth of age, the body's metabolic capacity is getting worse and worse, and it is impossible to fully absorb nutrients, which can easily lead to malnutrition, thin body shape, affect normal physical activities, and increase the risk of disease. On the contrary, people with normal nutrient absorption are slightly fatter and have stronger immunity.
So, what is the longest living weight? Scientists believe that the healthiest body mass index (BMI) for the elderly is 25-29 , BMI=weight (KG)/height (M)².
According to the WHO definition, a BMI of 18.5-24.9 is normal, a BMI of 18.5 < is underweight, a BMI ≥ 25 is overweight, and a BMI ≥ 30 is obese.
With the improvement of living standards and changes in lifestyle, more and more people are facing the crisis of overweight and obesity. Being overweight has no health benefits, it only increases the risk of chronic disease and shortens lifespan.
Therefore, if you want to live a healthy life, you must remember: eat until you are full, eat a variety of diets, exercise reasonably, etc.
References
[1] "Body weight determines life expectancy? Which body type lives longer? If you want to live to ninety-nine, the key is not to do these 5 things". Popular Science China. 2022-05-11
[2] "Stop losing weight blindly! It took scientists 73 years to discover: "Slightly fat" people live longer! ". Health Times. 2021-11-17
[3] "The Lancet" Sub-Journal Reveals: Does Intestinal Microflora Really Affect Obesity? 》. New Perspectives in Medicine. 2022-07-14
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