Human health directly depends on his lifestyle. And therefore, it is important for all of us to keep abreast of scientific discoveries that are somehow related to health. For example, recently it turned out that a dim light makes us dumber, drinking hot tea is deadly, and there are hundreds of times more bacteria in a fitness club than in a public toilet.
Happy Worthy Life collected 10 fresh discoveries in the field of medicine, which everyone should read and, in fact, draw appropriate conclusions.
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1. At age 25, brain aging begins
Scientists from Gdańsk Medical University (Poland) and from Lancaster University (UK) have learned to monitor the pulsation of cerebrospinal fluid. Thanks to this, it was possible to establish that the frequency of cerebrospinal fluid pulsation slows down from the age of 25, which means that the human brain begins to age from 25 years old, and not from 40, as previously thought.
2. The fitness club has more infections than the toilet
The Fitrated.com fitness portal team conducted their own research and found that the risk of getting an infection in the gym is much higher than in a public toilet: they found 362 times more germs on the simulators than on the toilet seat of the street toilet . Moreover, more than 70% of bacteria were potentially dangerous to humans: they can easily cause colds or skin diseases. The most “microbial” in the fitness club were exercise bikes and treadmills. Experts recommend observing basic safety rules: wipe the simulators with an antibacterial cloth, do not touch your face and do not walk barefoot in the locker room or shower.
3. To get rid of cravings for sweets, you need to sleep 21 minutes longer
Scientists from King’s College London (UK) conducted an experiment with 42 completely healthy volunteers with normal weight who slept at night less than 8 hours. Half of the participants were asked to sleep at night longer than usual for a month. Participants were also asked to record in food diaries everything they ate during the day. As a result of the experiment, the duration of sleep among participants increased by an average of 21 minutes. An analysis of the data showed that even such a slight increase in the duration of night sleep led to a decrease in the consumption of sweets by an average of 10 g per day, which is approximately a third of the recommended daily dose. Long sleep also reduced participants’ interest in carbohydrates.
4. Hot tea increases the risk of cancer
Chinese doctors issued a warning about the threat of drinking hot tea. For 9 years, doctors monitored eating habits and the state of health of almost 500 thousand (!) People aged 30 to 79 years. During this time, experts found 1,731 cases of cancer of the esophagus in the observed. Scientists have found that this cancer is 5 times more likely to occur in patients who regularly drank hot tea. Thus, doctors concluded that drinks whose temperature exceeds 65 ° C cause thermal injuries to the internal organs of a person . In addition, smoking and alcohol cause complications. All these bad habits lead to cancer.
5. Dim light dulls
Scientists from the University of Michigan (USA) as a result of the study concluded that being in dimly lit rooms adversely affects the brain. So, during the experiment, the mice were exposed to dim light. For a person, this is comparable to conditions resembling cloudy winter days or dim lighting in a room. As a result, the mice living in the dim light forgot much of what they had been taught before, and barely coped with the tasks that they had previously performed without difficulty. When the mice from the “dull” group were kept in bright daylight for some time, their brain function was fully restored.
The researchers concluded that dim light degrades the quality of connections between neurons and leads to a decrease in intellectual abilities , in other words, it dulls.
6. Imagination will help reduce pain.
The Dutch psychologist Kaya Peerdeman from Leiden University, studying the placebo effect, made a funny discovery . It turns out that if you imagine that it is not painful to inject, then there may be less unpleasant sensations . This was proved during the experiments: the participants were asked to lower their hand in icy water for a while. Then people had to repeat this again, but imagine that their hands are protected by a waterproof warm glove and, therefore, immersion of the brush in cold water will be less painful. Surprisingly, the placebo effect worked, and the participants actually experienced less pain when their hands were immersed in water.
Pirdeman plans to test this method of analgesia using imagination on real patients who are expected to undergo surgery.
7. Muscle aging due to mutations in stem cells
Researchers at the Karolinska Institute (Sweden) during the study found that muscle aging occurs due to the accumulation of mutations in stem cells. So, it turned out that in every muscle stem cell, by the age of 70, more than a thousand mutations accumulate . DNA “breakdowns” are a direct result of cell division. At the same time, nucleic acid reduction mechanisms work fine at a young age. Scientists now want to find out whether physical activity in adulthood can inhibit the pathological process.
8. Early baldness may be a sign of heart disease.
The British Heart Research Foundation has examined more than 2,000 young men living in India. Scientists noticed that those who had problems with the cardiovascular system turned gray early and began to lose hair early. Consequently, early gray hair and early baldness in men under the age of 40 are a more accurate sign of impending problems with the cardiovascular system than obesity.
9. Pride saves older people from falls
As you know, people in old age, for several reasons, fall much more often than young people. The main reasons are poor eyesight, motor impairment, a sedentary lifestyle. But scientists from Aberdeen and Sterling Universities (UK), as a result of research, found that older people who have a sense of self-esteem fall 19% less than less confident people . In the course of further research, the mechanisms underlying this funny phenomenon are to be clarified.
10. The secret of super-long-livers revealed
Scientists from Northwestern University (USA) observed a group of people aged 80 to 100 years who did not have even the slightest signs of senile dementia, and revealed the secret of their longevity. But first, it’s worth saying that most of the observation participants smoked and regularly drank alcohol, were coffee lovers, didn’t follow any diets, and some allowed themselves such harmful effects as french fries and hamburgers. Moreover, none of them slept for 8 hours, as doctors advise. But absolutely all participants in the study were united by such components as an optimistic outlook on life, emotional stability, and active social life.
The lead author of the study, Professor Emily Rogalsky, came to the conclusion that a positive attitude towards life better protects against age-related dementia than good nutrition or the absence of bad habits.