How many calories should an adult male consume per day?

According to the book "Calorie and Protein Intake" published by the World Health Organization, a healthy adult woman needs to consume 1800-1900 calories per day, while a man needs 1980-2340 calories. So, how many calories do adult men consume per day? Let's have a simple understanding of this issue. I hope the following points will be helpful to everyone!

In 2000, the Chinese Academy of Nutrition and Dietetics clearly proposed the reference intake of dietary energy for Chinese residents, emphasizing that the daily energy requirement for adult male light and medium-intensity workers is 2400-2700 kcal; the daily energy requirement for female light and medium-intensity workers is 2100-2300 kcal. Babies, children and adolescents, pregnant women and nursing mothers, and the elderly have different physiological characteristics and different energy requirements.

If you want to get a more accurate picture of your daily calorie intake, you can refer to the basic metabolic announcement (if your intake exceeds this number):

Female: BMR = 655 ( 9.6 x weight in kg ) ( 1.8 x height in cm ) - ( 4.7 x age in years )

Male: BMR = 66 ( 13.7 x weight in kg ) ( 5 x height in cm ) - ( 6.8 x age in years )

Heat generation refers to when the change in the state of a system comes from the destruction of the thermodynamic equilibrium condition, that is, when there is a temperature difference between the system and the outside, we say that there is a thermodynamic interaction force between the system and the outside. As a result of the effect, energy is transferred from a high-temperature object to an ultra-low-temperature object. The energy transferred at this time is called heat generation. Heat generation and work are two different ways of energy transfer generated during the change of the system state. They are the measures of different ways of energy transfer. They are all related to the entire process of the change of the situation, so they are not functions of the system state.

The body needs energy for all its life activities, such as the metabolic response, muscle contraction, and glandular metabolism. This energy comes mainly from food. The nutrients commonly found in animal and plant food can be divided into five categories: carbohydrates, long-chain fatty acids, proteins, minerals, and vitamins. If water is added, it can be divided into six categories. Among them, carbohydrates, body fat (body fat can also store calories) and protein can release energy through oxidation in the body. The three are collectively referred to as "energy-producing nutrients" or "thermogens."

Discovery history: Humans have been conducting scientific research and exploration for their own transformation. Until around the 19th century, biologists from all over the world successively discovered that the basic metabolic rate is proportional to the human body surface area, that food has a unique driving force, confirmed that the law of conservation of energy also applies to the human body, and compiled a food calorific value table and a fluid calorific value index.

Biochemical reaction: Generally, 1 gram of carbohydrates, fat, and protein in the human body can produce 4kcal, 9kcal, and 4kcal of metabolic capacity respectively. In addition, under normal circumstances, a person's energy intake in 5-7 days is equivalent to the consumption. General function: maintain normal body temperature and release energy to the outside.