Can stress prolong life
Source:Can stress be helpful?
It is considered that the stress — this is an extremely dangerous condition that certainly must be fought. It is worth noting that it is a bit complicated. Stress — it is essentially an adaptive response that allows us to mobilize the power of our body to threat (stressful) situation. Of course, if you constantly experience stress, our internal reserves are exhausted, and then health problems begin. As in most cases, if we are talking about stress, it is important balance. But can stress be helpful enough to prolong life? Researchers from the University of Michigan believe so.
what is the use of stress
a group of scientists from the US have discovered that stress is experienced at an early age increases subsequent resistance to stress in the elderly that does not diminish thereby its negative effects on the body. In this study, the experts concentrated on the point that in the process of stress reactions in the cells accumulates too many free radicals. Free radicals — these are elements that damage and other internal structures of the cells, causing their differentiation and is considered to be one of the causes of aging at the cellular level.
But our body is not stupid and he has methods for fighting free radicals. However, when the cells produce more oxidants and free radicals than the number with which they can handle, and then begins the harmful effects. Studying the species of roundworms called Caenorhabditis elegans, American scientists Ursula Jacob and Daphne Bacopoulou found that worms that made more free radicals due to stress at a young age, lived longer than worms that have not been tested .
Researchers have long been wondering what determines the variability of life expectancy, One piece — is genetics: if your parents live long, then you have a good chance of living longer. But the other part is considered to be — this is your space. But this is not true. — scientists say.
Sort the thousands of larvae of round worms, scientists began to grow, divided into several groups according to levels of stress. From those who lived in the «greenhouses» to individuals who are constantly subjected to a variety «tests». The authors have identified the most important difference between them is the concentration of the modifier of histones. This compound is sensitive to free radicals arising from stress and its level, laid on the larval stage persists for life. It protects the body from stress. The more, the more stable the body. What do you think: is it worth the stress? Write about it in our .
If the life expectancy is determined solely by genes and environment, we would expect that genetically identical organisms grown under the same conditions, died about the same time, but this is not happening. Some worms live only three days, while others — 20 days. Then the question arises: what, besides genetics and the environment that is causing such a big difference in life expectancy?
When the researchers subjected the whole population of young worms to the impact of stressors, the life expectancy of the entire population increased significantly. Of course, the findings of this study can not absolutely «shift» people and the required additional studies in this field (the scientists and plan to do). However, have long speculated about the positive impact of stress on life expectancy. And it seems that hypotheses are the first confirmation.
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