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2y3k » Why doesn’t how much food you eat mean how much weight you gain?

Why doesn’t how much food you eat mean how much weight you gain?

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According to thermodynamics and the laws of conservation of matter and energy, the body does not gain more weight than the food it consumes. In addition, some of the energy contained in food is used to digest and process other foods in the body.

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It is difficult to calculate how much weight you will gain after eating 1,000 grams of food. First of all, it depends on your metabolism, individual differences in the process of metabolism and the utilization of food by the body. The purpose of metabolism is to ensure a balance between the food that is broken down and used for energy and protein synthesis, and the food stored by the body. The balance between the two is affected by factors such as weight, energy expended for exercise or warmth, and age – older people have slower metabolisms.

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So, some people may eat 1000 grams of chocolate without gaining weight at all, while others will gain a little bit. It’s hard to tell how much weight a person can gain from eating chocolate because everyone consumes different amounts of energy every day, but it is possible to know how much energy is in 1000 grams of chocolate. How is it calculated?

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Most foods have 4 main components, which are carbohydrates, protein, fat and water. The same vitamins and minerals are contained in foods, but in very small amounts. The amount of energy contained in different foods will depend on the relative content of carbohydrates, protein, fat and water in the food.

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The energy contained in the food is marked on the back of the food packaging bag, which is expressed in joules or kilojoules. Both are units of heat and can be converted into each other. 1 kilojoules is equal to 1000 joules. The energy of 4 kilojoules can raise 1 milliliter of 15 ° C water by 1 ° C.

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An average 100g milk chocolate bar contains about 7g of protein, 54g of carbohydrates, 34g of fat and 5g of water, which will provide 2300kJ of energy. An average 100g apple contains 0.2g of protein, 15.4 g of carbohydrates, 0.35g of fat and 84g of water, which will produce 250kJ of energy.

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Generally speaking, an adult man needs 10,500 kilojoules of energy per day. If he eats 1,000 grams of chocolate, the body will consume an additional 13 kilojoules of energy, which is originally stored by the body as fat or carbohydrates.

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