Is it true that there is a saying that 'the earlier you sleep, the earlier you die'? How much sleep per day is beneficial for longevity

Sleep is an important component of human life, and it has a profound impact on physical health and psychological balance. With the development of society, people's understanding of sleep has become increasingly profound

Sleep is an important component of human life, and it has a profound impact on physical health and psychological balance. With the development of society, people's understanding of sleep has become increasingly profound.

We all know that sleep is crucial for human health. Many elderly people express problems such as sleep disorders and staying up late at night. However, Mr. Li said that in recent days, he is full of energy and energy, staying up late to fall asleep.

Mr. Li stated that it is important to develop the good habit of going to bed early and getting up early, but his friend Mr. Wang said that going to bed early and getting up early may not necessarily mean good health. The earlier you go to bed, the earlier you die. So what exactly is going on?

01

Is it true that there is a saying that 'the earlier you sleep, the earlier you die'?

Most people believe that going to bed early and getting up early is good for their health, but I don't know when it started. There is a rumor that "the earlier you go to bed, the earlier you die." Is this statement true?

This statement may come from a study published in a foreign journal in 2021, which showed that both early and late bedtime may increase the risk of cardiovascular and cerebrovascular diseases, and people who go to bed early have a higher risk of death than those who go to bed late.

This study is based on more than 20 countries around the world, covering over 110000 people, and over a period of 9 years. It is reasonable to say that the scope and quantity of data are relatively reliable.

But in the early sleep group data, more than half of the people come from underdeveloped countries such as Africa, and their medical standards are already low. It is somewhat farfetched and unreasonable to attribute their deaths to early sleep,

Therefore, the statement 'the earlier you sleep, the earlier you die' is actually unfounded, but sleeping too long or not enough is not conducive to your health.

02

How long is sleep a day beneficial for longevity?

A research team from the Japan Cancer Center investigated the impact of sleep duration on lifespan among Asians and screened over 320000 volunteers from South Korea, China, Singapore, and Japan.

These volunteers were surveyed for nearly 14 years and divided into 6 groups based on their sleep duration, namely less than 5 hours of sleep, 6 hours of sleep, 7 hours of sleep, 8 hours of sleep, 9 hours of sleep, and more than 10 hours of sleep.

The final research results were published in the JAMANetwork Open issue of the Journal of the American Medical Association. Research has found that sleeping for 7 hours a day leads to all-cause death, cardiovascular risk, and cancer risk being the lowest.

Among the factors contributing to all cause death, men sleep for 6 hours, with the lowest risk of all cause death, while women sleep for 7 hours, with the lowest risk of all cause death.

Regardless of gender, compared to a 7-hour sleep duration, sleep duration exceeding 10 hours has the highest risk of all cause death. In the male population, compared to a 7-hour sleep duration, other sleep durations are associated with a risk of cardiovascular disease.

After comprehensively calculating various risk factors, it is concluded that sleeping for 7 hours a day is the most beneficial for longevity. Sleeping too long or too little is not conducive to physical health.

Finally, after comprehensively calculating various risk factors, the study found that sleeping for 7 hours a day is the most beneficial for longevity. If you sleep too long or too little, it is not conducive to your health.

03

Which is more harmful, sleeping too long or sleeping too little?

Sleeping too long

The sleeping time is too long. The sleeping center excites other central nervous system for a long time, and is suppressed for a long time. When the vitality is restored, the reaction function will be relatively reduced and become dull. So after waking up, the body will feel tired, weak, dizzy, and listless.

Moreover, the balance of neurotransmitters such as serotonin in the brain is disturbed, which will lead to headache. In addition, it will also lead to inflammation of the middle cerebral artery and induce migraine.

98Sleeping too long

Sleep too little

Long term staying up late and lack of sleep can cause a disturbance in the biological clock, trigger neurasthenia, worsen sleep quality, exacerbate insomnia, and also lead to a decrease in immunity.

Not getting enough sleep can increase the risk of various diseases such as depression, cancer, anxiety, metabolic disorders, etc. Long term sleep deprivation is also one of the pathogenic factors for hypertension.

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