Showing posts with label Scientists. Show all posts
Showing posts with label Scientists. Show all posts

Tuesday, January 28, 2014

American researchers have found that each person has a nose specific detector fat. With it, we can determine the level of this substance in different products.

Scientists at the California Science Center have found another way to avoid overeating, which can be used along with counting calories and a careful selection of products. It turns out that the person in the nose has its own excellent for detection of fat smell given to us by nature. Researchers believe that people can easily incorporate this detector for the regulation of its power.

Scientists believed that the smell of food is almost always determined by the man before he eats anything. It turned out that one of the first components of this odor is received by us olfactory information about whether the food contains fat. And if using innovative technologies, food producers will smell of fat in food more perceptible for the health of society, it will lead to a significant roll in the general trend of development of a worldwide epidemic of obesity .

"Our sense of smell allows us to significantly better orientation in everyday life than we used to think - said study author Dr. Johan. - We have the ability to determine the difference in fat content in the diet, which means that this ability provides specifically for evolution, and it is important. From time immemorial, the fat has been source of energy in the human body, and we learned to recognize the smell of greasy food to get this energy. Similarly, the sweet taste of foods high in carbohydrates is a sign that we obtain the energy of carbohydrates. "

Monday, December 09, 2013

Scientists believe that bad dreams help psyche to cope with negative emotions, while nightmares indicate that processing has failed.

As you know, we sleep about a third of his life, that is more than twenty years. 5 years of the twenty we dream. And there, you see, sometimes things happen much more interesting than real life.

People have long tried to unravel the purpose of bad dreams. The latest research in the field of psychology and physiology of the brain helped to open the door a little to the mysterious world of dreams.

Scientists believe that bad dreams help psyche to cope with negative emotions, while nightmares indicate that processing has failed.

In the journal Current Directions in Psychological Science , scientists Ross Levin and Tore Nielsen wrote that terrible dreams - one of the methods that the brain uses to process negative emotions.

Emotional regulation may be the main purpose of sleep, which occurs in the majority of dreams.

Nightmares, which scientists define as bad dreams that lead to awakening, by contrast, arise when the process emotion regulation is violated.

The researchers note that the bad dreams - quite normal. From observations, most of our dreams are difficult to attribute to the happy.

See all dreams. With that hardly anyone would argue - at least a couple of dreams in my life be able to remember each. Much more surprising - we see them every night, but still not one but five pieces.

Certainly not everyone will agree, and for good reason. In fact, we just did not remember. It does not depend on memory, and the attitude to dreams, or rather to the fact that they show us. If a person believes their complete nonsense, then his dreams with the onset of the morning, most likely, delicately hidden somewhere in the depths of the subconscious.

Lots of running and physically tired people usually sleep, "like the dead" and their dreams too little remembered.

Dreams are the same for us every night, without asking permission, and not interested in our relationship, because it is a physiological process, like everyone else.

Nightmares, forcing the person to wake up, according to scientists, disrupts the normal recycling process emotions. Waking up in the midst of a nightmare seems to rescue the man, but he woke up, he was only strengthened by the feeling that the danger is real.

Nightmares are a lot of people, especially in a period of strong stress . Approximately 85% of people might be at least one nightmare a year.

Nightmares become a problem if they begin to affect the day well-being.

Scientists also write that new ideas about the nature of nightmares helped create a new, more effective treatments for this problem.

For example, its effectiveness has been proven method replay images when the patient while awake recalls his nightmares and consciously change their story.

Sunday, February 10, 2013

That sleeping naked is very good for human health, not only physical but also psychological.

Sleep in the nude, allows the human body to prevent overheating of the body, as the overheating of the body could interfere with production of important hormones such as melatonin and growth hormone. In addition, the normal body temperature allows the body to restore the skin.

In addition, sleeping naked can control hunger, also lowers the blood levels of the hormone cortisol (stress hormone). This allows the person to wake up in the morning refreshed, with a good mood and keep this state throughout the day. A man who had trouble sleeping or body was overheated in the morning eat a lot more of its rules, rather than the one who is sleeping naked.

The scientists were able to prove that the most beneficial sleep is sleep duration of 7 hours, and the best position to sleep position is the embryo or supine.

In addition, they were able to reaffirm that daytime sleep is beneficial for the body. Because as a result of the sleep hormone of happiness. For example, people who managed to sleep for a week at least three hours, the risk of heart attack or stroke is reduced by 7 percent. The best time for such a dream is a period between 13 and 15 hour.

Saturday, June 30, 2012

Can't kick cigarettes? A vaccine may one day help by preventing nicotine from reaching its target in the brain, according to research published this week.

Most smoking therapies do a poor job of stopping the habit 70% to 80% of smokers who use an approved drug therapy to quit relapse. Scientists say this is because the targets of existing therapies are imperfect, only slightly weakening nicotine's ability to find its target in the brain.

So some scientists have been trying a different approach creation of a vaccine. It would work like this: People would inject the vaccine like a shot, and the vaccine would create nicotine antibodies, molecules that can snatch up nicotine from the bloodstream before it reaches the brain. The vaccine could be used by smokers who want to quit or people who are worried about getting addicted to cigarettes in the future.

Researchers have tried to create vaccines in the past, but the ones they've come up with have not been particularly effective. The authors of the new study say this may be because previous vaccines just didn't create enough antibodies to get rid of all the nicotine.

The new report, published in the journal Science Translational Medicine, attempts to solve this problem via gene therapy, in which a new gene is inserted into the body to do a particular job.

First the scientists at Weill Cornell Medical College in New York City put a gene that produces a nicotine antibody into mice. The gene was taken into the mice's livers, and the liver started producing the antibody. Once produced, the antibody connected with nicotine, trapping it and preventing it from making its way to the brain, where it would otherwise have caused the pleasurable, addictive effects it is so known for.

Because of this trick, the researchers say that the new vaccine should only have to be injected once, and it will work for life, continuing to produce new antibodies in the liver.

The vaccine was effective: When mice were given nicotine intravenously, ones with the vaccine had a 47-fold drop in levels of nicotine in the blood compared with ones that hadn't received the vaccine. The antibody had successfully captured the nicotine in the bloodstream before it could reach the brain.

The work is still preliminary, and the authors admit the technology is far from ready for human use; it has only been used in rodents so far. But given the results, and the continued public health effect of smoking, it may not be too long before all those boxes of Nicorette are replaced with a single trip to the doctor's office.

By Jon Bardin, Los Angeles Times