U.S. researchers found that the elderly who feel drowsy during the daytime, especially elderly women, compared with those energetic people during the daytime, are more likely to suffer from heart disease, and the risk of sudden cardiac death increases. The researchers also pointed out that, this does not mean that a nap is not important for the elderly.

The research has investigated 6,000 elder people over the age of 65, and found the crowd who are easy to fall asleep during the daytime, compared with other people with heart disease, the risk for female is 66% higher, while the likelihood for male patients to suffer from heart disease is also 35% higher.

Why the elderly suffering from heart disease easily fall asleep during the daytime? We know that the brain is the "Command" of the body; any activity that people carry on can not be separated for the analysis and synthesis of the brain. As the activity amount of the brain cell is large, so it needs adequate oxygen and nutrients. Although the weight of the brain only accounts for 1 / 47 of the weight, its demands of the glucose and oxygen are quite large, which may account for 20-30% of the whole body oxygen demands. The heart needs to supply 1 / 5 of the pumped blood for the brain tissue; when it is in a tense work, its requisite amounts of the oxygen and nutrients are more. Therefore, the metabolism of the active brain depends on strong heart functions to accomplish.

Feeling drowsy during the daytime may be the signal of heart disease edited by Heart Problems, all rights reserved, Do not copy or revise without our permission.