The latest 5 health misunderstandings that we must not know

Summary: five health errors have been found recently. Do you also have a wrong understanding?
1. Does running hurt your knee?
Many doctors suggest that swimming and walking are better than running if you want to exercise. Because many people think that running often may hurt the knee. However, new research shows that running not only does not damage the knee, but also protects the knee.
An article published last year in the journal Bone Radiology caused controversy.
In 1997 butts , scientists in the study began to observe the health of athletes who took part in the Vienna Marathon. Of the eight contestants, only one had knee problems. However, the runner's knee had health problems before running the marathon, and the knee problem disappeared after years of training. The other seven contestants had no knee problems in subsequent training and competitions.
Scientists at Stanford University also published a study last year, looking at the health of retired long-distance runners from 50 to 70 over a 20-year period. At the start of the study, about 7% of athletes had knee pain, but 20 years later their knees were healthier than before. In the control group girl using vibrator , at the beginning of the study, 100% of people had knee health, and 20 years later, 32% had knee problems.
These studies show that running does not damage the knee. In contrast, knee damage is usually caused by external impact or running too little. Once the knee is damaged, the human body may have a compensatory response, change the pace of walking, break the original balance, and rapidly worsen the knee problem.
two。 Sunbathing: cure or illness?
Until the 20th century, people in many countries tried to avoid direct sunlight, but it seems that changes have taken place at the beginning of the 20th century.
At the beginning of the 20th century, scientists discovered that ultraviolet rays and sunlight (including ultraviolet rays) could treat malaria. The cause of the disease is vitamin d deficiency, patients are prone to fractures, but also have symptoms of bone deformities. Fenson, a Nobel laureate in physiology or medicine in 1903, found that light in many bands of sunlight had medical effects, and his discovery sparked an upsurge in sunbathing that lasted for many years.
Today, we know that ultraviolet radiation can cause skin cancer, and this year sunlight is regarded as the same high-risk carcinogen as asbestos and other substances. Ultraviolet rays are no longer a possible carcinogen. It's a carcinogen. Sunbathing is safe and the dose of ultraviolet radiation is small enough to cause cancer. It is true that low doses of sunlight require the production of vitamin D, but how low the dose is is still a hot topic of debate in the scientific community.
3. Is eating only health products harmful to your health?
Will there be no health problems if you only eat health products? Maybe there's a limit to what you can do. This year, doctors discovered a diet-related disease: healthy food obsessive-compulsive disorder (orthorexianervosa). People who suffer from this disease will force themselves to eat some healthy food to improve their health or treat certain diseases.
Some patients go to extremes in their diet (such as eating raw food), but end up lacking vitamins. Some patients like to pay very high prices for imported food or organic food. When a person feverishly pursues healthy food, eating behavior occupies most of the time of daily life, and even raises the diet problem to a moral level, which will seriously affect his mood, this is the manifestation of "illness".
Not all doctors agree that health food obsessive-compulsive disorder is indeed a disease, but as people pay more attention to health and nutrition, it is more and more likely to occur.
4. If you often eat eggs, the mortality rate will increase.
In recent decades, many people think that eggs are high in fat and bile, and doctors advise people to eat less eggs, so the health of eggs in the public mind has been greatly reduced.
A report published last year in the American Journal of Clinical Nutrition showed that the death rate among men who regularly ate eggs increased by 22%, and that rate doubled for people with diabetes.
But don't be frightened by mortality. In fact, the gallbladder in eggs (each containing about 200mg) does not significantly increase the concentration of bile in the blood like the fat in butter and meat, and eggs are also rich in vitamins, minerals, fatty acids and other nutrients.
In addition dildo vibrator , the claim that eating eggs increases mortality has not been confirmed by more studies, and although many doctors do not recommend eating eggs regularly, more and more doctors have regarded eggs as an indispensable part of healthy foods.
5. Is one vitamin tablet a day good for your health?
One of the greatest medical advances of the 20th century was the discovery of the role of vitamins and minerals. Simply reforming the food structure and increasing the intake of vitamins can put an end to diseases such as rickets, scurvy, rough skin disease, goiter and so on.
In that case, why not take vitamins every day? It sounds logical, and doctors advised people to do so in the 1990s. So this advice raises some strange questions: high doses of beta-carotene increase smokers' risk of lung cancer; high doses of vitamin C make experimental mice more likely to develop cancer; vitamin E increases the risk of secondary heart disease.
In 2006 dildo masturbation , the National Institutes of Health pointed out that there is no convincing evidence that taking vitamins every day must be good for your health. Today, more objective advice is that you don't have to stop taking vitamins, but you don't have to take vitamins in the first place.