One in ten cases could be avoided by limiting television viewing to one hour a day

Limiting television viewing to one hour a day can prevent one in ten cases of coronary artery disease.

TV fan? You might cut down on your TV viewing after reading the results of this new study. According to the work of a team of researchers from the University of Cambridge and the University of Hong Kong, too much television would be associated with one increased risk of coronary heart disease. Therefore, it would be advisable to limit your time in front of the television to a maximum of one hour per day to limit these pathologies.

Why does television influence the onset of coronary artery disease?

In detail, the researchers found that 11% of cases of coronary artery disease, a leading cause of premature death, could be prevented by limiting daily television time to less than an hour. This is logically explained by the fact that among the risk factors for coronary heart disease we find a sedentary lifestyle, that is, sitting for a long time.

The research team proposes several reasons that could explain the link between TV viewing and the risk of coronary artery disease. First of all, they point out that watching television, especially after dinner, which is the most calorie-dense meal, leads to higher levels of glucose and lipids in the blood. In addition, the researchers point to snacking, which would take place more often in front of the television than when surfing the Internet. Finally, they explain that television viewers tend to increase their time in front of the screen, while people in front of their computer tend to interrupt their activity.

To reach this conclusion, the study analyzed data from more than 500,000 adults. These were followed prospectively over a period of about 12 years. They discovered that people who watched television for more than four hours a day were most exposed to the disease, regardless of their polygenic risk score. As a reminder, the latter represents the genetic risk of developing coronary artery disease, based on 300 genetic variants known to affect the likelihood of developing the disease.

Compared to these heavy TV viewers, those who watched TV two to three hours a day had a 6% lower risk of developing the disease, compared to a 16% lower relative rate for those who watched less than an hour a day watched tv. However, time spent in front of the computer did not appear to affect disease risk.

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