The first chapter of a long and healthy life "tips" (2)
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However, we must also note that excessive exercise is harmful. It not only can lead to physical injury, but also at the molecular level may cause injury. Of 20 engaged in fierce campaign (training 10 hours a day, sustained 30 days) of the men's study showed that the rate of oxidative DNA damage increased by 33 percent. Another in vitro experiments showed that exposure to extreme environment of the human cells can not repair the damage mitochondrial DNA. Therefore, excessive exercise are likely to increase the mitochondrial DNA of the extent of damage, thereby endangering human health.
Relaxation, the wisdom of life
There is a Western proverb: 40-year-old fool on the misconduct after a doctor. In other words, after entering middle age, some people still indifferent to the health of their own, but some people are very concerned about his physical condition. To take care of themselves was a good thing, it helps to adopt a reasonable diet and exercise, and early detection and treatment of disease. However, if the physical condition has become a concern can not escape, who could not help but the problem has aroused anxiety and tension, it is the great enemy of health. In a tense state of the biochemical factors (such as epinephrine) can increase the risk of many diseases, such as the brain cell damage and stimulate tumor proliferation and trigger coronary heart disease. Adverse psychological state can also reduce immune resistance. Indeed, long-term tension in the people on average, have higher mortality, and feel a certain degree of autonomy (whether real or imaginary), health and longevity is an important factor. We can not completely avoid stress, especially in middle age after retirement, spouse's death and other social changes in the environment, we will bring more tension factors. But we can learn to properly deal with the tense situation, as far as possible live a relaxed life.
There are a Western proverb: the older the more clever academics, the older the more stupid illiterate. Aizihaimo disease (Alzheimer's disease) is the health of the elderly one of the greatest threats, after the 85-year-old, almost half of the people will show some signs of dementia. Aizihaimo by a variety of genetic and environmental factors, including a surprising factor is education. Many studies have shown that highly educated persons with a lower risk of Aizihaimo, and lack of education increased the risk of senile dementia. The reason may be able to stimulate the education neurons form more synapses, thus reducing the Aizihaimo extent of the damage. Environment on the synapses of the central nervous system to affect the number of puberty before the most significant, but in other periods, including old age, can also play a role. "Live to old age, learned the old", is another secret of good health and longevity.
Avoid the sun
The sun is the source of life, it is also our physical health have a direct benefit: the sun's ultraviolet rays can be in the skin of ergosterol into vitamin D2. But UV can damage the DNA in skin cells and other biological molecules that cause gene mutations, thus increasing the possibility of cancer. Skin cancer is one of the most common form of cancer, because it was considered over-exposed skin from the sun, especially for fair complexion of a greater impact. In addition, ultraviolet radiation is the major factor in skin aging. Therefore, to prevent skin cancer and premature aging of the skin, the key is to avoid exposure under the sun, so as not to solar radiation in the most time in outdoor activities, the use of shade appliances, and the skin exposed body parts applied sunscreen.
Good health and longevity is the key to a healthy lifestyle, but the need for long-term maintenance of a healthy lifestyle is difficult. People always look forward to found a delay aging, youth or even a panacea. This mentality breeds a large health care products market. But there is no treatment, food, medicine has been proven to extend life or resistance to aging. Due to human aging, highly complex mechanism, the youth found a panacea to the possibility of minimal. Superstition some health products, can only play the role of psychological comfort, but a waste of time, money, or even physical damage due to side effects. If therefore ignored, to give up a healthy lifestyle, is to give up the possibility of access to good health and longevity. A person's health status and life expectancy is genetic factors, environmental factors and accidental result of the interaction of factors, a healthy lifestyle can not guarantee that everyone has good health and longevity, but in the present, it is to guarantee the health and longevity of the majority of the people most Reliable way.
