Experts warn kids who play video games for hours are at risk of developing deadly medical conditions

Children who spend hours playing video games could be at risk of developing a potentially deadly medical condition called deep vein thrombosis, experts warn. Deep vein thrombosis (DVT) is a blood clot that forms in the veins of one's legs - and the risks of getting DVT are higher if you sit still or lie down for extended periods of time without moving. While DVT is more common among the elderly, new research from the Medical Research Institute of New Zealand shows that it can also be triggered in young children who live sedentary lifestyles. This is why children who play video games - whether they're sitting or lying down - for up to three hours or more could potentially develop deep vein thrombosis. In one case, a boy as young as 12 suffered from DVT after he played video games for four hours straight in a kneeling position, The Telegraph reported.