Obesity causes .To look at obesity from a biomedical perspective on obesity, and assess the genes that can shift the balance toward obesity. Let's have easy access to nutrients contribute to the increase in obesity in humans. But, what is obesity and why not everyone is obese To assess the genes that can shift the balance towards obesity, one becomes obese when the balance between energy intake and energy expenditure changes. Surprisingly, the mutations that lead to obesity in humans are not in genes involved in metabolism and energy storage, but failures in satiety signals in the brain that lead people to overeat. Excess energy consumption over energy expended leads to obesity.
What are the consequences of obesity on human health.
Physically, obesity can lead to impaired movement and sleep disturbances. But in humans, the link between obesity and metabolic disease is not direct. For example, not everyone who is obese becomes insulin resistant, the likelihood of an obese individual developing a metabolic disease correlates with the ability of adipose tissue to store excess fat. Mutations that reduce fat storage in adipose tissue increase the chance of developing metabolic diseases, such as insulin resistance, even when a person is not obese.
How does excess fat accumulate in the body.
Obesity is a condition in which excess fat accumulates in the human body to the extent that it may have a negative impact on health. People are generally considered obese when their body mass index (BMI), a measurement very easily obtained by dividing a person's weight by the square of a person's height, is more than 30 kg/m2; The range 25-30 kg/m2 is defined as overweight, and some East Asian countries use lower values. Obesity increases the likelihood of developing various diseases and conditions, particularly cardiovascular disease, type 2 diabetes, sleep apnea, certain types of cancer, osteoporosis, and depression.
What is the most common cause of obesity.
The most common cause of obesity is the combination of
- excessive eating,
- lack of physical activity,
- and genetic predisposition.
Some conditions are primarily caused by genes, endocrine disorders, medications, or a mental disorder. The view that obese people eat little but gain weight due to a slow metabolism is not medically supported. On average, obese people expend more energy than their normal counterparts due to the energy needed to maintain an increased body mass.
Obesity increases the risk of nearly 200 diseases, including heart disease, diabetes, asthma, high blood pressure, arthritis, sleep apnea, and several types of cancer. Obesity was a risk factor in nearly 12% of deaths in the United States in 2019.
Even for COVID-19, carrying a significant extra weight triples the likelihood of developing severe disease.
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