According to the book Calories and protein Intake published by the World Health Organization, a healthy adult woman needs to consume 1800 ~ 1900 calories every day, while men need 1980 ~ 2340 calories.
Among them, the intake of protein should be10% ~15% of the daily calories needed by human body; Should the intake of carbohydrates not be lower than the daily calories needed by the human body? 55%; The intake of fat should not exceed 30% of daily calories.
In addition, the daily intake of salt should not exceed 6 grams, and the daily intake of dietary fiber should not be less than 16 grams.
Extended data:
Generally speaking, adults need at least 1500 kcal of energy every day to maintain body function, because even if you lie still, your body still needs energy to maintain body temperature, cardiopulmonary function and brain operation. Basal metabolic consumption varies with individual height, weight, age and gender.
Human survival needs energy, which is obtained from food. The calorie content in food is a measure of how much potential energy food produces. 1g carbohydrate contains 4 calories, 1g protein contains 4 calories, and 1g fat contains 9 calories.
Food is generally composed of these three substances. Therefore, as long as we know the contents of these three substances in food, we can know how much heat or energy food contains.
A simple algorithm for human body's basic metabolism of basic calories;
Female: basic calories = weight (kg) x 9
Man: Basic calories (calories) = weight (kg) x 10.
References:
Calories _ Baidu Encyclopedia