7 myths about health and medicine, with which it is time to say goodbye
Health / / December 19, 2019
Over the years of development of medicine people know a lot of life hacking, which help prevent or effectively resist all kinds of diseases. Wash hands before eating, breathing deeply in stressful situations, sleep at least eight hours a day, drink plenty of fluids - the list is long. However, not all the popular recommendations are equally useful.
Layfhaker collected seven myths with which it is time to say goodbye.
1. Mantoux test can not be wetted
This is one of the most popular misconceptions. It is believed if water gets on the skin, it can affect the body's response, because of what the spot by the injection will increase in size and will give reason to suspect tuberculosis. However, it is not.
Injection tuberculin administered into the deeper skin layers. To get there, and hence affect the reaction water can not. This is why expert adviceTuberculin Skin Testing There are no restrictions regarding bathing after mantle. Physicians are asked just as far as possible do not rub or scratch the injection site.
2. Ranki and scratches need to handle hydrogen peroxide
It is believed that the peroxide disinfects and accelerates healing. In fact trohprotsentny solution of hydrogen peroxide (H2ABOUT2), Which is often found in the home first aid kits, in terms of the treatment of wounds is almost useless.
Evidence that peroxide is effective as a healing agent, the scientists have not foundDermal wound healing is subject to redox control. With regard to the disinfecting properties, the study still underway. However, there is evidenceMechanisms of delayed wound healing by commonly used antisepticsThat the peroxide (as, incidentally, and iodine) with antiseptic point of view is not the best choice. The fact that many organisms contain enzymes quickly disables the H2ABOUT2Therefore reducing the number of bacteria is only of short duration.
However, it is written off from the peroxide is not necessary accounts: it is effective for mechanical cleaning of wounds. About the same as clean running water.
3. Antivirals save from colds
Unfortunately not. Antiviral agents that could be prevented or alleviated during SARS and the common cold, to date, there is noAntivirals for the common cold. The efficiency of a limited number of drugs confirmed only in influenza type A. They ease symptoms and shorten the disease by about a day that you will agree, not so much. However, respiratory infections too tough for them.
In addition, antiviral tablets may be safe for healthAnd this too should be considered.
4. Vision deteriorates reading in dim light
Eyes reading in the twilight does not really like - it's a fact. In low light falls strain the eye muscles and a closer look into the text. Because of this, the frequency of blinking becomes lower, and the mucous membrane - land. As a result, the eyes get tired more quickly. To read in low light really uncomfortable. But this does notReading in Dim Light to any irreversible consequences for the visual system.
5. Stretching before exercise is necessary
If you are going to run a hundred meters faster than Usain Bolt or raise a record weight for yourself right now, then in addition to prepare the muscles for extreme loads will not be superfluous.
But by and large stretching is useless. She did not have a significant impactTo stretch or not to stretch: the role of stretching in injury prevention and performance nor on the intensity of pain after exercise or to prevent injury. And in some cases, if the stretching too intense, she is also impairs muscle strength and overall outcome studies.
All of the above concerns only stretching, but not workout before training as a whole. Preheat the muscle still desirable. Only further pull them well, not necessarily.
6. In fresh fruits contain more nutrients than frozen
Frozen fruits and vegetables are exactly the same beneficial featuresAs fresh. The reason is that they are frozen immediately after harvest, when the nutritional value of green is highest. And some frozen fruit: for example, corn, blueberries and green beans - even surpass the latest in terms of vitaminsVitamin Retention in Eight Fruits and Vegetables: A Comparison of Refrigerated and Frozen Storage.
In any case, frozen fruits and vegetables are beneficial to "svezhachka", which lay on the counter or in the pantry at least a day or two: heat and relative humidity contribute to loss of nutrient values.
Green peas loses approximately half of vitamin C for 24-48 hrs after harvest.
7. Foods high in cholesterol are harmful
In fact, cholesterol is not harmful, but rather vital. It provides the stability of cell membranes of all living organisms on Earth. And besides, is involved in the production of vitamin D under the influence of solar rays, the production of steroid hormones, including cortisol, progesterone, estrogen and testosterone. Popular edition HuffingtonPost at one time published a long article about how unfairly demonized cholesterol. The curious can read it here.
Short squeeze (not only articles, but also from other research) cholesterol contained in food, not It is going to destroy your health and does not have the slightest effect on the cardiovascular condition system.
When doctors talk about high cholesterol, they do not have in mind the amount of the substance obtained from food - for example, eggs. We are talking exclusively about the cholesterol circulating in the blood, said the popular American medical resource WebMDThe Dangers of High Cholesterol.
Violation of cholesterol metabolism in the body - that is the main evil. And to prevent it, the blood cholesterol level is recommended to control. This is done not by any food restrictions, and prevention methods: using regular blood tests and consultation with a physician watching you.
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