People who often like to sit on the sofa and watch TV should pay attention to it. a cooperative study between Cambridge University and the University of Hong Kong found that watching too much TV may increase the risk of coronary heart disease, and this risk increase has nothing to do with genetic factors** In other words, the more you see, the more likely you are to be approached by coronary heart disease.
One of the main risk factors of coronary heart disease is sedentary. Previous studies have found that people who sit for a long time without physical exercise have a higher risk of coronary heart disease.
Speaking of sedentary, about 2/3 of the leisure time of contemporary people now sit and watch various screens, including watching TV and using computers. To explore the association between screen related sedentary behavior and coronary heart disease, the researchers analyzed data from a British biological sample bank involving more than 500000 adults followed up for 12 years.
Participants need to fill in the time for watching TV or computer screen, in 1 hour. In order to eliminate the interference of genetic factors, the researchers scored the genetic susceptibility of participants, mainly based on 300 gene mutation sites related to coronary heart disease.
According to their research and analysis, regardless of the genetic score, people who sit and watch TV for more than 4 hours a day have the greatest risk of coronary heart disease. Compared with these people, those who watch TV for 2-3 hours a day have a 6% lower risk, while those who watch TV for less than 1 hour have a 16% lower risk.
And regardless of the age of the participants, the risk of watching TV less than 1 hour a day is always the lowest.
However, surprisingly, the time spent sitting on the computer did not affect the risk of coronary heart disease. The risk of coronary heart disease was highly similar in all age groups and computer users.
The researchers believe that there are several potential reasons why there is such a big difference between watching TV and using computers. First of all, most people watch TV after dinner. At this time, people eat high calorie dinner, and then sit all the time when their glucose and lipid levels are very high, which will directly affect the body's metabolic process.
However, using a computer may be accompanied by a lot of mental activities, and sitting watching TV can also eat a lot of snacks at the same time. If sitting on a computer to work or play games, it will be much less. After all, both hands have been occupied by the mouse and keyboard.
The researchers pointed out that the World Health Organization has repeatedly recommended that we reduce sedentary behavior and appropriately carry out sports activities of any intensity in order to maintain good health. "The new study may provide new and unique insights in the prevention of coronary heart disease and limit the time you watch TV," said Dr. youngwon Kim of the University of Hong Kong, one of the participants in the study. "People who watch TV less than 1 hour a day must have a lower risk."
If you have the habit of watching TV after dinner, you'd better learn from people who use computers, get up and walk around regularly, and consume some energy. This may at least play a role in reducing the risk of coronary heart disease.