Myth content: The theory of human acid-base constitution is a widely spread theory, which holds that most diseases of human body are caused by acidic constitution. Because it caters to some people's psychology about diet and health, with the help of some health care products vendors, it has become a popular "medical common sense" after repeated dissemination and reprocessing, and it has also caused the spread of remarks such as "alkaline constitution is easier to have sons".
Truth: The mechanism of regulating acid-base balance in human body is very complicated, but the pH of body fluids is generally very stable, and it is almost impossible to change obviously just by eating a certain food. For example, the normal pH value of human blood is 7.35~7.45. Beyond this range, it is a disease state and needs targeted treatment. In other words, abnormal pH value is the result of disease, not the cause of disease.
This section is scientifically checked by Shen Yingjian, deputy chief physician of Nutrition Department of General Hospital of Jihua Group Company.
Myth: Foot patch can adsorb toxins trapped in human cells and effectively remove toxins and water in the body. After sticking the foot patch, the foot patch will turn black, and the black substance appearing on the sole of the foot is the adsorbed "toxin". Foot patch can also eliminate skin spots and acne, improve constipation, and eliminate bad breath and foot odor in a short time. In addition, the foot patch has the effects of lowering blood pressure, lowering blood lipid and blood sugar, improving skin luster, improving sleep and delaying aging.
Truth: In fact, this is a cover-up for businesses. As long as you drop a few drops of water on the foot patch, it will turn black. Therefore, the blackening of the foot pad is not detoxification, but sweating. The human body excretes "waste" mainly through feces, urine, breathing, sweat, hair and other ways, and the sole of the foot is not the main way.
This part was scientifically examined by Shi Yan, deputy chief physician and associate professor in Department of Dermatology and Sexology, Xijing Hospital of Air Force Military Medical University.
Gossip content: the article "Starbucks' biggest scandal is exposed, and the global media is brushing the screen! What you drink in your mouth every day actually causes cancer, and it is circulated on the Internet again. The article says that coffee contains acrylamide, a strong carcinogen.
Truth: When food is heated at high temperature, it will produce a small amount of acrylamide, which is considered to be potentially carcinogenic to experimental animals. However, nearly half of acrylamide intake in China comes from cooking, and coffee is not the main source. At the same time, in 20 16, the International Agency for Research on Cancer (IARC) made a comprehensive analysis of the existing research results and came to the conclusion that there is not enough evidence to show that drinking coffee will increase the risk of human cancer. In 20 17, the report issued by the International Fund for Research on Cancer (WRCF) also pointed out that there is no evidence that drinking coffee can cause cancer. At the same time, there is some evidence that coffee can reduce the risk of some cancers, such as breast cancer, endometrial cancer and liver cancer.
This part was scientifically examined by Fan Zhihong, an associate professor in the Department of Nutrition and Food Safety, College of Food Science, China Agricultural University.
Gossip content: There is a story that a doctor visited various farms during a flu epidemic in history. He found that many farmers and families could not escape the flu, but one family was surprisingly healthy because they put a peeled onion in every room. It is said that this is because onions absorb germs, so the whole family is healthy. There is also a saying that both ends of the onion are cut off, put on a fork, then put the fork in a vase and put it next to the patient at night, and the onion turns black the next day. This is the performance that the onion absorbs and kills the flu virus.
Truth: Onion contains organic sulfide (the source of spicy taste), which has certain inhibitory effect on bacteria. But the flu is caused by virus infection, and onions have no inhibitory effect on the virus. Influenza is an acute respiratory infection spread by droplets, but most people with normal immunity can heal themselves in 3~5 days. If severe patients may be infected with bacteria, mycoplasma pneumoniae and Legionella, they need to seek medical attention in time.
This section is scientifically checked by Gu Haitong, deputy chief physician of the Department of Respiratory Medicine, Beijing Tongren Hospital, Capital Medical University.
Myth content: BPA in drinking cups and shopping receipts is seriously exceeding the standard, which has great cancer risk. It is recommended to wash your hands after touching the shopping receipt, and try not to touch it for a long time, especially when your hands are sweaty or greasy.
Truth: Although there is bisphenol A on the shopping receipt, the content of bisphenol A in each gram of the receipt is only 0.0 139 grams, and the amount entering the human body through touch is even less. Taking cashier as an example, the intake of bisphenol A is 42 times lower than the safe dose after contacting the receipt 10 hour every day. Therefore, the probability of cancer caused by consumers touching several shopping receipts a day is very small.
This section is scientifically checked by Shen Yingjian, deputy chief physician of Nutrition Department of General Hospital of Jihua Group Company.
Gossip content: an article widely forwarded by friends circle-"Important! UNSW China develops magic medicine: within five years, human life will be extended to 150 years old! "Everyone can buy cabbage", saying that a "magic medicine" has been developed, which can prolong human life to 150 years old. In order to increase its persuasiveness, the article also attached a screenshot of the original English media report.
Truth: In 20 17, David Sinclair and his mentor Leonard Guarente published papers in Science and Cell respectively, introducing the changes of 6-month-old mice and 22-month-old mice after intraperitoneal injection of solvent and precursor NMN of NAD. The results show that NMN can reverse physiological aging to some extent and keep young physical strength.
Although the results of animal experiments are very encouraging, the number of samples is too small. If we want to prove that the same effect can be reproduced in human body, we need to do human experiments again. It is too exaggerated and outrageous to brag about it as a panacea for rejuvenation now.
This part is scientifically checked by Song Ge, deputy chief physician of TCM outpatient department of Chinese Academy of Traditional Chinese Medicine and leader of state administration of traditional chinese medicine TCM cultural reserve discipline.
Gossip content: There are rumors on the Internet that a study shows that China people and Japanese people eat more than three servings of white rice every day, and those who eat more white rice have a 55% increased risk of diabetes; Americans only eat 1~2 servings of white rice every week, and the risk of diabetes only increases 12%. Therefore, it is concluded that eating white rice often is the inducement of diabetes.
Truth: In China, southerners love rice and northerners love noodles, but compared with the overall prevalence of diabetes, northerners are significantly higher than southerners; In Japan, in recent years, compared with thirty or forty years ago, the per capita sales volume of rice has dropped from1.20kg/year to about 60kg/year, but the prevalence of diabetes in Japan has obviously increased. Diabetes is a disease caused by many factors, which is related to heredity and lifestyle.
This part was scientifically examined by Fan Zhihong, an associate professor in the Department of Nutrition and Food Safety, College of Food Science, China Agricultural University.
The content of the rumor: "Drinking milk will cause calcium deficiency", "Milk contains chemicals" and "Violating nature will be damned" and other voices spread on the Internet. It is also said that milk will make human nature precocious and stupid, shorten life span and stimulate cancer cells, which is very harmful to health. The rumor also cited many documentary evidences, such as Campbell's China Health Survey Report, to increase its credibility.
Truth: "Milk causes cancer" is an open misinterpretation of an experimental study. In this study, rats need to ingest strong carcinogen aflatoxin B 1 to induce cancer, and rats who eat casein (from milk) feed and soybean protein feed have more cancer. In fact, if aflatoxin did not induce cancer, neither group of rats would get liver cancer, and the conclusion of this study cannot be directly extrapolated to humans. The evidence of epidemiological investigation of milk and cancer also shows that the milk intake recommended by the current dietary guidelines (about one cup a day) does not increase the risk of cancer.
This part was scientifically examined by Fan Zhihong, an associate professor in the Department of Nutrition and Food Safety, College of Food Science, China Agricultural University.
Gossip content: An online article "Adding potassium ferrocyanide to salt" said that a professor found that his transaminase, total bilirubin and creatinine increased. After examining the food he ate, he thought that the "culprit" was potassium ferrocyanide, an anti-caking agent in salt. Therefore, it is concluded that China domestic salt contains potassium ferrocyanide, which is toxic and inedible.
Truth: Potassium ferrocyanide, also known as yellow blood salt potassium and yellow blood salt, is a light yellow single italic crystal or powder and a legal food additive. The chemical properties of potassium ferrocyanide are very stable. If potassium ferrocyanide is to be decomposed, it needs to be done at 400 degrees Celsius. People usually cook at home. When the temperature reaches 200 degrees Celsius, the food is burnt. So you don't have to worry about the safety of eating salt every day.
In addition, according to the evaluation data of the expert committee of the World Health Organization and the International Food and Agriculture Organization, it is harmful for adults to consume at least 1.5 mg of potassium ferrocyanide every day. According to China's national standards, the content of potassium ferrocyanide in salt should not exceed 10 mg per kilogram. According to this standard, if you eat 150g salt every day, the intake of potassium ferrocyanide will exceed 1.5mg, while normal people eat 20g salt every day, which is very salty, so normal edible salt will not cause harm to human body.
This part was scientifically examined by Fan Zhihong, an associate professor in the Department of Nutrition and Food Safety, College of Food Science, China Agricultural University.
Myth content: Online hot garlic pot will turn "good garlic" into "poisonous garlic". When using a high hot pot, garlic will have a chemical reaction, releasing acrylamide, a carcinogen, so it is concluded that garlic pot will cause cancer.
Truth: Acrylamide produced in the process of frying garlic is actually a by-product of Maillard reaction in food. Maillard reaction is common in food heating treatment, so acrylamide also exists in cooking, baking food and barbecue food. However, according to the scientific opinions of the National Food Safety Risk Assessment Center and the Hong Kong Food and Environmental Hygiene Department, acrylamide in China people's diet is not harmful to their health. Of course, from the perspective of diet nutrition and health, cooking more and frying less is a better cooking method.
This part was scientifically examined by Fan Zhihong, an associate professor in the Department of Nutrition and Food Safety, College of Food Science, China Agricultural University.
(In no particular order)