The wrong thoughts in life that we still believe

Hair and hair will grow thicker after you shave it. Reading in the dark will gradually make your eyes worse. Peeing in the place where the jellyfish burns will relieve the pain . The way our bodies work is always a mystery, and the desire to unlock all these mysteries has led to a lot of information being present. false. Many of them are widely known, and are believed to be an obvious fact. We must always be suspicious, and do research to find the truth behind it. And the following is what we need to pay attention to.

Story 1. Hair on the body grows thicker when you shave them

If you've seen it, you'll probably remember, a piece in Seinfeld, when Jerry decided to shave his chest hair, ignoring the warning that it would regrow twice as thick as before. Although it is on television, the reality is completely different. If that's the case, bald people must constantly shave their heads to prevent hair loss. Child researcher Rachel C. Vreeman and partner Aaron E. Carrol rejected this view.

In the early 1928, a clinical trial demonstrated that shaving and hair removal would not affect their thickness or regrowth rate . Moreover, shaving them out is to remove the 'dead' part, not to remove the 'living' part under the skin, so it seems to have no effect on their growth rate. New hair and regrowth hair is not as tapered at the beginning as it was before cutting, so it makes us feel like they are 'rough'. And similarly, new hair grows less exposed to the sun, and has not been affected by chemicals, so they will look darker than before.

In short, basically, new hair and hair grow very rough, and you feel it's thicker. In fact, you're fooling yourself, they don't change at all.

Story 2: Calorie intake is the only issue that needs attention to regulate health and weight

You always believe that the calorie intake balanced with calories is enough to keep your weight at a certain level, but that you have considered your body too simple. Consuming less calories may have a certain effect, but not all foods have the same effect when we digest them. If you have such a simple thought, think about the difference between a candy bar and a cucumber (with an equal amount of calories). They taste different, have different nutritional ingredients, and are completely different things. It doesn't seem logical if they are used by the body in the same way.

The problem is, you're considering 'calories' as some kind of material. In fact, 'calories' is just a unit of caloric measurement, and it's not the first thing you think about when it comes to food. According to wikipedia, 'one calorie is the energy needed to raise the temperature of a gram of water by 1 degree C' . Basically, calories are a unit of measurement, not 'matter' that helps the body create energy. The body uses what is absorbed from food. You will not become thinner if you eat only low calorie foods.

Many people have argued about this issue due to the appearance of Mark Haub's diet, in which he eats with a calorie reduction regimen, two-thirds of the diet consists of only miscellaneous foods that contain very little energy. quantity. But there is a problem here. This is just a single study of a person, not for everyone. Even Haub asked himself: what does this mean? Does that mean I'm better? Or does that mean the way we define health from a biological point of view, what have we missed?

Haub reduced 800 calories in his diet every day, which is quite a large amount. There will be no questions about the amount of calories we eat in relation to the body's energy storage and weight loss, but simply, calories do not give us a full picture. The way the body metabolizes sugar is a great example of how different types of food digest will be different.

Dr. Michael Eades has noticed two studies - one is Ancel Keys' fasting experiment and the study by John Yudkin - both are testing low-calorie diets with different nutritional ingredients. Research by Keys uses higher carbohydrate foods and lower fat intake. And Yudkin's research is the opposite.

The results of the two studies are also very different. Yudkin's research ends with results: dieters are completely healthy and Key's research is the opposite. Moreover, the nutritionist Kari Hartel also gave the main ideas about how different nutrients will be used. For example, she pointed out that 'fiber is not fully digested, so it is more beneficial without increasing calories in diets'. In addition, 'your body produces more calories from absorbing and metabolizing proteins than others. Protein helps slow down the transport of food from the stomach to the small intestine, helping you feel fuller longer. "

With the idea that your body will be healthy by eating a certain amount of calories, it actually shows that your food and body are much more complex. Although reducing calories can mean something, it is not the only factor. Your current weight, the amount of weight you want to lose, your nutritional balance, the amount of calories you consume through exercise, and the amount of time you sit in one place every day are Important factors affecting your health as well as weight loss. Reducing your intake of calories is a brief way to talk, but you must also pay attention to other factors to achieve the health you expect.

Story 3. You need to sleep 8 hours a day

It is often said that we have to sleep 8 hours a night, in fact the argument is not true for everyone. The newspaper Hindustan Times pointed out that a European study showed that people with ABCC9 gene in their bodies need less sleep than others. Finding a similar gene in fruit flies, the scientists found that changing this gene also changed the amount of fly rest. When conducting an investigation of each person's sleeping hours, the results were very interesting. For some, eight hours of sleep each day is required. For others, that's too much.

In addition, Wired Magazine identified a chemical called Orexin A that acts as a sleep replacement. It occurs in the human body with a certain amount, and when the content of this substance decreases, people will feel tired. Since its discovery, Orexin A has been produced in the form of a nasal spray to test its effect on narcolepsy. In UCLA's study, some scientists decided to try some of the tired monkeys smelling this substance. Monkeys who are sleep deprived for 30 to 36 hours divided into two groups, one sniffed with Orexin A, one given tranquilizers (non-medicinal drugs that were primarily psychologically assured), then both This group was given a cognitive test. The group 1 monkeys were given Orexin A to complete the test well, in which group 2 still seemed lethargic and did not pass the test.

Anyway, the information about Orexin A is still in the process of testing, but people want to say that sleep is not required to be fixed as we think. Another way, sleeping 8 hours a day is not bad, but not everyone needs to sleep that much time.

Problem 4. Reading in dim light can hurt your eyes

Reading in dim light is not good for your eyes. Many people think so. If you read a book in a dark corner, people will prompt you to turn on the light. In fact, if you read books in low light conditions, you will suffer eye strain; and according to child health researcher Rachel C. Vreeman and teaching Aaron E. Carrol, this is not serious and will not cause permanent effects on your eyes.

According to the majority of eye specialists, reading in dim light will not harm your eyes. Although your eyes may get tired, along with many temporary bad effects, it will not permanently affect the structure and function of your eyes. As with patients with Sjögren's syndrome (an autoimmune disease that causes inflammation of the exocrine and ocular surfaces), visual impairment and eye strain when reading will improve as they stop reading.

An article about nearsightedness has concluded that reading books with one eye, reading too close to the eyes, will adversely affect the eyeball and cause nearsightedness, but reading in low light is not necessarily The cause of myopia. Another example is the increase in nearsightedness in high school learners. In the past, people often read books in low light, such as candles or lanterns, but myopia was not high, so increasing the rate of nearsightedness over the centuries is evidence that reading in the absence of light is not necessarily harmful. In addition, there are many ideas that reading in low light will not harm your eyes.

Problem 5. Urination on a burning jellyfish will ease the pain

On the TV show Friends, there was a time when Monica was stung by a jellyfish, and then Joey thought that peeing on the sting would help relieve pain quickly. Although this is just a TV show, it also helps spread the idea that urinating on your friends is a good situation. Not really. Mark Leyner and Dr. Billy Goldberg, author of Why Do Men Have Nipples?, Has a guide that can be applied on most jellyfish stings.

You need to remove all the remaining jellyfish, using gloves will be better. Pour vinegar on the area where the jellyfish burns. Acetic acid in vinegar helps remove jellyfish cells from the sting, helping to relieve pain and itching. If there is no vinegar, you can use salt water. In the laboratory, people see urine, ammonia and alcohol aggravate the burning jellyfish, and will only make you feel more painful.