Does being hungry mean burning fat?

In fact, many people think that if they are hungry, they will consume their fat, so they will choose to diet to lose weight. But in fact, doing so will only cause greater harm to their bodies, especially their gastrointestinal tract. So try not to let yourself be too hungry, and pay attention to a scientific and reasonable diet, so that you can effectively consume your fat.

The metabolic process of fat cells in the body is a very active and uninterrupted cycle.

Under normal circumstances, the body's fat cells continuously absorb free fatty acids produced by the decomposition of food from the blood, and then combine the free fatty acids with glucose in the cells. α-Glycerol phosphate combines to form triacylglycerol phosphate.

On the other hand, the triacylglycerol phosphate produced in fat cells can be broken down by lipase in the body into glycerol and free fatty acids. Part of the latter is released back into the blood for use by other tissues of the body, while the other part is re-esterified. The energy required for the re-esterification of free fatty acids and the hydrolysis of triglycerides in fat cells is very small, but the free fatty acids released into the human blood can provide sufficient energy for the liver and other tissues.

Fat mobilization during exercise is regulated by the nervous and endocrine systems. Sympathetic nerves, adrenaline, glucagon, thyroxine, growth hormone, cortisol, etc. promote fat mobilization, while insulin has an inhibitory effect. The energy supply role of fat during exercise is determined by exercise intensity, exercise duration, training level, diet, etc. During rest and low-intensity exercise, skeletal muscle mainly utilizes oxidized fatty acids for energy. As exercise intensity increases, the proportion of energy supplied by fat decreases relatively.

During short-term exercise, regardless of the intensity, fat mobilization is not significant. During long-term exercise, the proportion of energy supplied by fat gradually increases as the exercise time increases, and can account for up to 70-90% of the total energy consumed.

Endurance training can cause adaptive changes in the body, including improving the regulatory capacity of the nervous and endocrine systems, the body's oxidative metabolic capacity, and the activity of lipase in adipose tissue and liver. During exercise, the body's main fat depots, namely the subcutaneous tissue and visceral areas, have better blood supply. These are all conducive to the mobilization of fat during exercise.