How does the body work during night hours?
- 361 views
Today we are asking you “How does the body work during night hours?” Smoking is harmful to work at night, and how it affects the body and the human brain.
In some professions, night shifts are needed. Dry cleaning personnel needed in hospitals, airports, and even stores, because our society is moving towards a 24-hour activity. If you carefully plan the day and find a little time to relax after dinner, you can safely work all night, and then sleep as little as 8 hours.
Some even tell you that the work in this mode, it is not difficult and they are quite used to it. But how can the body really adapt to the inverted mode, day or night? And most importantly, does not harm if the night work of our health?
How does the body work during night hours?
This question has two sides. First — this is our mental sense of self. People really get used to working at night. Studies show that over time, we adapt to waking at night and is much easier to transfer the work on the night shift, but some people adapt to the nocturnal activity can be quite difficult.
Canadian researchers conducted a study in which watching a small group of police officers during their night shift. The researchers monitored the sleep cycle, the level of light during the holidays and the amount of the hormone melatonin. Typically, the sleep hormone melatonin is produced in the human body in the evening, when we start to feel tired and ready for bed.
If your body is well adapted to night work, rush hormone moves to daytime hours. In this study, those participants whose levels of melatonin showed their adaptability to night mode, to feel happier and are more attentive and have demonstrated a more rapid response. However, the percentage of such people among the participants in the experiment was only 40%.
During a large-scale study involving three thousand police in Canada and the United States who work night shifts, the researchers found that 40% of those who could not adapt to the work at night, suffering from a sleep disorder.
Even now, you feel good; it is unknown whether it will have a negative impact on your body in the long run. To evaluate the effect of sleep deprivation on the body, it is necessary to distinguish between its effects on lifestyle and direct impact on health. When you work at night, you find it difficult to adhere to proper diet and exercise regularly.
It’s not that hard to find a salad night, and that you do not want to eat it when you’re fighting to stay awake. At night, snacks and fast food is more enticing. Order pizza and curry — not only more convenient, after which you will feel better. But eat them every night — not very useful.
For sports and have fewer opportunities. If after a day and you will be able to drag yourself to the gym, then do it after working the night when the only thing you dream — a dream to be much more complicated.
Airline pilots, for example, feel much better than in the days of vacation than when they were working at night or early morning shifts. Of course, most people prefer the weekend, regardless of whether they work day or night. But the researchers also found that pilots who worked in the morning shift had elevated levels of the stress hormone — cortisol — in the moment of awakening, as well as during the day.
In the long term, high levels of cortisol increase the risk of heart disease and leads to increased blood pressure. One study showed that a night shift is enough to raise blood pressure.
Add to this the findings of a study conducted by the University of Surrey, which proved that after three-night shifts disrupted the process of protein synthesis in the genes, which means that they are activated at a different time of day.
About 6% of our genes are configured to operate at a certain time, but after a few days, an unusual mode of this model is easily disturbed. And another study showed that after five weeks, during which people are not sleeping at night, and by day, in their body and changed the balance of glucose metabolism is disturbed, and in the long term it could lead to the development of Type II diabetes and obesity.
However, these studies were carried out mainly for a short period of time, so perhaps, in the long run, the body will adapt better. However, the results of epidemiological studies conducted over the years, as a whole is not very encouraging.
In medical circles for some time continued the debate on the impact of the work at night to increase the risk of cardiovascular disease. The largest analytical review of current research results, published in 2012, confirmed the increased risk of heart attack in people who work at night.
Even with a healthy lifestyle night, shifts increased the risk of developing the disease. In the matter of the metabolic syndrome, which is associated with obesity, increased levels of glucose, blood pressure and cholesterol, lifestyle, it seems crucial.
There is some evidence that women who work at night have a higher risk of developing breast cancer, especially if they are by their nature «larks».
However, large-scale epidemiological studies do not answer the question for which these negative effects are more dangerous. Does it matter how long people work night shifts, and how his body was able to adapt to a different mode? Is the level of danger the same for all?
Studies have also complicated by the different character and the number of night shifts.
In the meantime, scientists will study more thoroughly the impact, not of night work on the body, all those who work at night, it is recommended to eat right, exercise and try to detect the disease at an early stage.