Seeing the title, the general public will think it must be trying to lose weight to ask this question. This is because everyone knows that you can't go without protein for weight loss, and that carbohydrates and fats are the two main nutrients for energy supply. For your question, the first point to point out is that sugar, starch are carbohydrates, to say that pure at the same time no carbohydrate, fat food is almost nothing. It can only be said to be relatively low or very low, or with sugar, without fat or with fat without sugar.

1, vegetables

Vegetables, general carbohydrate and fat content is relatively low, especially root vegetables, fresh beans, eggplant, squash, young stems, leafy vegetables, such as: radish, bean curd, eggplant, bitter gourd, winter melon, cucumber, celery, kale, asparagus, etc. Protein is only 0.1-0.2g/100g. Vegetables in the very low carbohydrate: radish, lettuce, Bean sprouts, tomatoes, cucumbers, zucchini, cabbage, small greens, cabbage, etc., the content of carbohydrate in 1.0-3..5g/100g.

2, cereals and potatoes

Cereals are high in sugar, staple food? generally in 65-78g/100g or so, and the fat content is generally in the 1.0-10.8g/100g or so. Potato carbohydrate content is much lower compared to cereals, between 15-30g/100g. Fat content of 0.1-0.8g/100g or so, so potatoes as a staple food to eat is conducive to weight loss.

3, animal food

(1) livestock and poultry meat

Fat content ranges from 2%-89%, beef fat 4.2g, beef kidneys 2.4g,, chicken 9..4g (but different fatty acids) carbohydrates 1%-3% (almost no)

(2) eggs

Protein about 12%, fat 0.1 -33.8g/100g,egg white 0.1,duck egg yolk 33.8,egg 9.0,duck egg 13.0,goose egg 15..6,carbohydrate 1.5g,duck egg 3..1g,goose egg 2.8g.(so eggs are a good ingredient for weight loss people

4, milk

Milk fat 3.2g , goat's milk 3.5g, yogurt 2.7g, carbohydrates, milk 3.4g, goat's milk 5.4g,yogurt 9.3g (suitable for weight-loss people)

5, aquatic

Fish fat content of 1%-10%, an average of 5%, mainly unsaturated fatty acids, carbohydrates about 1.5% or so, some Fish such as pomfret, chub, silverfish does not contain , (suitable for weight loss people)

Mollusks, such as fresh shellfish, mussels, sea cucumbers, snails, oysters, mussels, squid (water-soaked), etc., with a fat content of 0.2-2.1%, carbohydrates 0-8.2% , squid 0, oysters 8.2, sea cucumber 0.9g,(suitable for people who want to lose weight)