Childhood obesity is on the rise, and technology may be to blame. Pediatricians also say that severe obesity is increasing among young people. Although one traditional focus is on the amount and type of foods kids eat, one study says that obesity is on the rise, not just because of food, but because as we use more technology, we exercise less. With technology that includes cars, television, computers and mobile devices, the amount of time we spend sedentary increased and our time in physical activity dropped.