Will hunger consume fat?

The human body needs to replenish a large amount of carbohydrates and energy every day, because these substances are important factors in replenishing human physical strength. However, after the stomach digests and absorbs these substances, people will feel hungry. When hungry, the human body will also consume some material components, such as protein, sugars, etc. So if a person is hungry, will he digest fat?

When a person is hungry, does the body consume protein or fat first?

If you only consider fat and protein, the body will consume fat first and then protein.

When the human body is hungry, the first thing to be mobilized is carbohydrates. It is the first energy to be mobilized by the human body among the three major energy-producing nutrients. When the carbohydrate content in the body begins to be insufficient and difficulties arise, fat will begin to be consumed, and then protein.

To help you remember the order in which these three energy-producing nutrients are consumed, you can define carbohydrates as cash, protein as real estate, and fat as savings. Only when the cash is fully used up will the deposits be used, and only when the deposits are exhausted will the real estate be used.

However, if the body is in a state of hunger, ketonemia or ketonuria will easily occur, because the decomposition of fat in the body requires the synergistic effect of glucose. When carbohydrate intake is cut off, fat will be broken down into fatty acids to supply energy. In this metabolic process, if the body saves protein, the oxaloacetic acid produced in the tricarboxylic acid cycle will not be sufficient, and the fatty acids cannot be completely oxidized, which will produce too many ketone bodies. Ketone bodies cannot be oxidized in time and accumulate in the body, which can easily lead to ketoacidosis or ketonuria.

Therefore, the human body should not be hungry for too long. During this period of time, not only will the deposits (fat) be consumed, but even the real estate (protein) will be lost.