Myth 1: Meat and bone soup for calcium Many patients with fractures like to use meat and bone soup for calcium, in fact, the calcium content in meat and bone soup is not high. Experimentally, when 1 kilogram of meat and bone soup is cooked for 2 hours, the calcium content of the soup is only about 20 mg, but the fat content of meat and bone soup is high because of the bone marrow. The recommended daily intake of calcium needed for adults is 800 mg, and patients with fractures need more. Calcium supplementation with meat and bone broth is far from adequate and should be supplemented with milk or calcium preparations. Myth 2: Fish without scales have high cholesterol This is not a comprehensive summary. It is true that some fish without scales have high cholesterol, such as silverfish, river eel, loach, eel, cod, but not all fish without scales have high cholesterol, such as striped bass, shark, similar to scaled grass carp, pompano, bass, etc. Myth 3: The less carbohydrates a diabetic patient eats, the better Blood sugar and carbohydrate intake are related. Diabetic patients should properly control the intake of carbohydrates to prevent blood sugar overload. Normal energy intake should be maintained under the condition of maintaining normal body weight, and carbohydrates should still be maintained to account for 60% to 65% of energy. Diabetic patients should consume foods rich in dietary fiber such as oatmeal and fresh vegetables each time, so that carbohydrate digestion and absorption will be slow and blood sugar will not rise too fast and the level will be more stable. If simply eating less carbohydrate instead, digestion and absorption will be fast and blood sugar will rise quickly and for a short period of time, which will easily lead to hypoglycemia, palpitations, dizziness and cold sweat. Myth four: only eat vegetables at night without eating can lose weight The main reason for simple obesity is too much energy intake, consumption is too little, energy in the body into fat accumulation, the formation of obesity. The three major nutrients that produce energy are protein, fat, carbohydrates. Fat 1 gram can produce 9 kcal of energy, protein and carbohydrate 1 gram can produce 4 kcal of energy. Less eating can be less carbohydrate intake, can reduce the intake of energy, but more dishes will be more fat intake, the energy produced higher, can not achieve the purpose of weight loss, but make the intake of nutrients can not balance, is not conducive to health. Myth 5: The elderly drink milk to cause cataracts Some people say that because milk contains cysteine, oxidation is easy to damage the eye crystal, so that the crystal clouding cataracts, so the elderly should not drink milk. In fact, milk is rich in calcium, which is an important source of calcium in the diet, and the casein in milk is also a high-quality protein, which is beneficial to human absorption and utilization. The formation of cataracts is caused by various factors. The elderly have low antioxidant capacity and can take antioxidant nutrients such as vitamin C, vitamin E, beta-carotene, trace elements selenium and zinc to prevent senile cataracts. Myth 6: Supplementation should be done for protein The so-called supplementation is for lack, what is lacking is supplemented, what is not lacking is not supplemented. At present, the supply of protein in our diet is sufficient, so there is no need to supplement protein for the general population; and too much protein will increase the burden on the liver and kidneys, increase the excretion of calcium, and make it easier to produce calcium deficiency, so there is no need to supplement protein in general, but only when the disease or special needs. The nutrients that are missing in our dietary structure are: vitamin A, B2, B1, calcium and zinc, so it is only when these vitamins and minerals are supplemented that the supplement is targeted. Myth 7: Patients with kidney stones cannot take calcium supplements Kidney stones are mostly calcium oxalate deposits in the urine, mainly due to excessive oxalic acid intake, which combines with calcium to form calcium oxalate deposits when eliminated from the urinary tract to form kidney stones. The key to prevent and treat kidney stones is to reduce the intake of foods that contain a lot of oxalic acid, such as spinach and bamboo shoots, etc. Even if you eat them, you should boil them to remove the oxalic acid content. Myth 8: Supplemental vitamin C is easy to kidney stones Vitamin C is a cofactor of enzymes and is related to the synthesis of collagen, healing of wounds and the brittleness of blood vessels; vitamin C also has the role of antioxidant, promoting the absorption of iron and improving immune function. The recommended daily intake for adults is 100 mg, with a tolerable maximum intake of 1000 mg. Vitamin C supplementation, as long as the daily intake is within 1000 mg, is not likely to cause kidney stones.