The so-called "acid-base constitution" has never been scientifically confirmed. For more than ten years, scientists, doctors and popular science workers have been clarifying that this is a pseudoscience. Regarding the propaganda of food acidity and alkalinity, it advocates' pay attention to acid-base balance when choosing food', especially emphasizing that acidic food is harmful to health. These propaganda have had a great influence on our residents. From the point of view of nutrition, these statements lack scientific basis, so they are not worth advocating.
In fact, people's physique has no difference in pH, and it has been kept at around PH7.4. In fact, no matter what water you drink or what food you eat, you can't change the acid-base balance of your body. Acidic food and alkaline food are both components of a balanced diet, which are essential for rational nutrition.
"From a nutritional point of view, a healthy diet mainly advocates a dietary pyramid, that is, a diet structure in which grains, vegetables, fruits, meat, eggs and milk are gradually reduced." The dietary pyramid is designed according to the nutrients such as carbohydrates, protein and vitamins needed by human body, and has nothing to do with pH value.
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Every day, this widely circulated knowledge is "pseudoscience"
1, rumor 1: It is recorded in ancient books that papaya has the function of breast enhancement because papain and vitamin A are at work, which can stimulate the secretion of estrogen and help breast enhancement. Papaya enzyme can also decompose protein and promote the body to absorb protein.
Truth: Experts say there is no scientific basis for papaya breast enhancement. The traditional papaya in China refers to the papaya of Rosaceae, but at present, papaya is sold in fruit stalls, which has no breast enhancement effect, but it can be eaten often to lose weight and beautify. From a medical point of view, breast tissue development is related to estrogen, while vitamins, papain and papain in papaya have no effect on stimulating estrogen growth.
Papain can break down fat. The size of breasts has a lot to do with fat. Many women lose their breasts in the process of losing weight. Because papaya contains papain which can decompose fat, papaya can also play a role in slimming, so it will only lead to breast reduction, but not breast enhancement.
2, rumor 2: large doses of vitamin C tablets have the effect of preventing and adjuvant treatment of colds.
Truth: There is no modern medical research to prove that vitamin C can prevent and treat colds. In the 1970s, Pauline, winner of the Nobel Prize in Chemistry and Peace Prize, argued that large doses of vitamin C could treat and prevent colds and cardiovascular diseases. However, with the deepening of research, vitamin C therapy has been proved to be unreliable, but its efficacy in treating colds is often mentioned, and many people believe it.
3. Proverbs 3: The traditional idea is that "form complements form". 99% of calcium in human body is stored in bones. People think that eating more bones and drinking more bone soup will supplement calcium.
Truth: Bone soup can't supplement calcium, and milky white soup doesn't mean high calcium content. The main ingredient of bone soup is water, as well as fat, protein and cholesterol. Milky white represents high fat content and high calories. The ingredients of bone soup are mostly insoluble calcium salts, which are poorly absorbed by human body. It is found that every 100 ml of bone soup contains only 2~5 mg of calcium, which is less than 5% of the calcium content of milk.
4. Rumor 4: The rumor of coke killing sperm was circulated in Central and South America decades ago. It is said that carbonic acid in cola can kill sperm, and the sugar in it can "detonate" sperm.
Truth: From 20065438 to 2006, Danish doctor Zhan Sen investigated the sperm quality and caffeine intake of 2554 young men. The results showed that drinking coke every day (two bottles of 500ml a day) did not affect the number and vitality of sperm.
5. Proverbs 5: Bedclothes do a lot of harm, which will oppress the vitality and elasticity of small intestinal villi, lead to acidosis due to fermentation and flatulence, and also change the shape of abdomen and spine, making the body deformed.
Truth: "bedroom" is not a medical concept, but a concept created by merchants. Some people's abdominal circumference has increased, resulting in "general belly" and "beer belly", which are mainly caused by abdominal fat accumulation, and have nothing to do with defecation, and it is even more impossible to lose weight through "defecation".
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