10 myths about food, which denies science

Many still try not to eat after six pm. It seems that if the sleep on a full stomach, eaten everything goes into fat. But this is just a myth. Nutritionists have told about these common misconceptions.

1. Do not use wooden cutting boards for meat

It is believed that by using a knife on a wooden board will crack and microscopic depressions which remain in the finest particles of raw meat and bacteria. It would seem better to use plastic boards that are easy to wash and disinfect.

However, studies have refuted this belief. Dean Cliver (Dean O. Cliver) from the University of California found that the plastic boards do not provide any significant antibacterial benefits.

Even if specially put on a wooden board bacteria, the natural characteristics of wood will not allow them to proliferate. All bacteria caught in the cracks on the wooden surface, gradually die.

Cliver tested boards from ten types of wood and four types of plastic. The result was unexpected. If a sharp knife to cut the working surface of plastic and wooden planks, which were bacteria, which then cleared manually, more bacteria can be found in the plastic, and not in the tree.

Therefore, whatever the cutting board you use, just look after it carefully and disinfect the work surface. And do not buy the board, which promise a special antibacterial coating. This is just a marketing ploy.

2. If you add salt to the water, it boils faster

It was still hard not only housewives but also professional chefs, but anyone who knows chemistry, will tell you that the amount of salt that we add when cooking, did not affect the boiling point of water.

Yes, strictly speaking, the salt changes the boiling point of water, but it all depends on its concentration. To significantly speed up the boiling water would have to add and completely dissolve the salt so that the resulting dish eventually would become inedible.

The amount of salt we attach usually during cooking, boiling water changes at best only a few tenths of a degree.

3. Low-fat foods are good

Without fat human body can not absorb most of the nutrients necessary for survival. Moreover, lack of fats leads to different outages nervous system.

Sufficient fat correct only helps with weight loss and cholesterol reduction.

Look at the composition of the products in the store and are thinking about buying, and not drag on the machine for low-fat foods, because you heard somewhere that they are useful. Most fat-free products contain little "good" and a lot of "bad" fats, as well as a lot of additives and substitutes (eg, sugar, and sodium).

Try to include in your diet monounsaturated fats (avocados, pecans, almonds, peanuts) and omega-3 fatty acids (chia seeds, seaweed, salmon).

4. Dairy products - the best source of calcium

Many believe that the best dairy products for health and strong bones is nothing. Yes, in dairy foods contain vitamin D and calcium, but it is also in dark leafy greens (kale, spinach).

But bone strength depends not only on calcium and vitamin D. It is equally important VITAMIN K (it is in leafy greens, but in the dairy products - is not present) and magnesium (there are almonds, cashews, oatmeal, potatoes, but not in milk) .

If you take care of your bones, do not just milk. Include in the diet and other sources of calcium: kale, mustard greens, kale, cabbage, bok choy.

5. It is necessary to drink eight glasses of water a day

Water was recently advertised as a cure for all ills. Of course, it is necessary for normal body function, but eight glasses a day will relieve you of all the problems.

Universal amount of water that should drink each, does not exist. You do not have to stick to some certain amount of water per day, simply drink when you feel like. Power - an individual matter. Sometimes, the body may need less, and sometimes more than the average rate of the water.

And do not forget that the body gets the water from any liquids, fruits and vegetables. A sign of sufficient water content in the body - the light color of urine.

6. Foods that are high in sodium salty taste, so you should avoid salty

This is especially important for those who follow the consumed amount of salt and sodium because of the risk of developing hypertension or diabetes. The difficulty is that not all foods that are high in sodium taste salty. Its many different sauces, baked goods, semi-finished products and fast food.

So do not forget to look at the composition of the products in the store and find out what it consists of your favorite foods in cafes and restaurants (many of this information is available on the website).

7. If there is an egg, will increase the level of cholesterol

On blood cholesterol affect saturated fats and trans fats. The eggs contain very little saturated fat (about 1.5 grams of fat in one large egg), and trans fats are absent. Scientists believe that the amount of cholesterol, which is in the yolk, only a small portion enters the bloodstream.

The complete elimination of eggs from the diet because of fear of anything you do not give to the cholesterol, but can only do harm. By abstaining from eggs, you are depriving yourself of 13 vitamins and minerals, as well as a delicious breakfast.

8. Aluminum foil and utensils associated with Alzheimer's disease

This myth has been particularly prevalent in the United States in the 1980s and 1990s, and even now it is not as popular, some still believe in it. This is because in the course of research carried out in the 1960-1970's, was found elevated levels of aluminum in the brains of patients with Alzheimer's disease. After that, many began to avoid aluminum cookware, and even foil.

However, since it conducted a number of studies. Now scientists believe that all ingested aluminum is processed by the kidneys, excreted in the urine and is not related to Alzheimer's disease.

9. crust on roasted meat helps keep it more juicy

In the XIX century the German chemist Justus von Liebig, one of the first suggested that if the cooking meat at very high temperature, the resulting crust will not miss is inside the liquid, so the meat will be juicier.

Only here during his Liebig experiment compared the amount of fluid and nutrients in a single piece of meat, slow cooking in water, and in another, roasting on a very hot surface. Naturally, fried meat juicier happened, because from the first piece of easy digested everything.

Popular author Harold McGee in his book "On Food and Cooking? (On Food and Cooking) described an experiment in which meat was compared with and without crust. Both pieces were prepared in the same manner. It was found that meat, fried to a crisp, less juicy than meat without crust.

10. Do not eat after six or seven o'clock in the evening

Much more important is what you eat during the day. Food eaten after six in the evening, not magically turns into fat. This advice "helps" lose weight only because it reduces the overall number of calories per day.

This myth came from a misunderstanding of the digestive system. People think that if you go to bed on a full stomach, slowing the metabolic processes in the body lead to the fact that all the food eaten will go into body fat. This statement is only partially true, and that is not for everyone.

Although metabolism during sleep really slows down, it does not stop completely. Food in the stomach will still be digested.

Of course, you do not lose weight, if you eat bad, all day get up from the table and do not exercise. Here it does not matter how much you reap - in five or seven.

If you go to bed very late, and dine at five or six in the evening, because you want to lose weight, it will not help you. You just miss one meal, but it is quite dangerous if you are trying to lose weight. In the body turns on starvation mode. During the next meal will take place the release of hormones that make you eat more than usual. As a result, you only hurt yourself.

Listen to common sense: if any new advice or magic diet too good to be true, and for everyone, without exception, most likely, this is another myth. Such information is better to be skeptical and try to check it in reliable sources.