Today is World Sleep Day and lack of sleep can cause disease. A team of researchers at the University of Warwick Medical School said that chronic sleep deprivation can increase the risk of stroke or heart disease. Researchers are urging people to take immediate action to “defuse” the “time bomb” that can damage health by sleeping late and waking up early. The researchers analyzed health data from more than 470,000 people in eight countries and regions, including Japan, the United States, Sweden and the United Kingdom. The data spanned 7 to 25 years. Their analysis concluded that if you often sleep less than six hours a night and sleep restlessly, then the chances of suffering from heart disease or dying from heart disease is 48% higher, suffering from stroke or dying from stroke is 15% higher. Study team members Francesco? Capucho said: “The habit of late to bed and early to rise is equivalent to planting a ticking time bomb for health, you need to take immediate action to reduce the risk of these fatal diseases.” Another panelist, Michele? Miller said that chronic sleep deprivation also increases the risk of high blood pressure, diabetes and obesity. The study was published in the European Heart Journal. Sleep more life forever Capucho said that many people in modern society have lost their work-life balance, sacrificing valuable sleep to get work done, “which significantly increases the risk of stroke or cardiovascular disease, such as heart disease. However, Capucho also reminded the public that sleeping too long is not good. Sleeping for more than nine hours in a row can be a sign of cardiovascular disease. He believes that about seven hours of sleep per night is most appropriate. ”By getting about seven hours of sleep a night, you can protect your future health while reducing the risk of chronic disease. （The (sleep-health) link is clear in our study: get enough sleep to stay healthy and live longer,” Capucho said. Lack of sleep causes disease Ellen Mason, a senior nurse at the British Heart Foundation, said the study was a good one. Mason praised the study by Capucho and others as further evidence that sleep is vital to health, while also reminding people of the possible dangers of sleep deprivation. ”Although lack of sleep is associated with heart and circulatory disease, the various causes are not fully understood,” Mason said, “and when people lack sleep, hormone levels and chemicals in the body may change, which can affect the heart and circulatory system over time. “ Mason said a variety of factors contribute to modern sleep deprivation, such as the increasing ease of access to the Internet, the increase in television channels, worries about financial situations and longer working hours. ”But it’s more important for us to put sleep in perspective and get six to eight hours of sleep a night so we can regain our strength,” she said.