By Shereen Jegtvig NEW YORK (Reuters Health) – Programs designed to prevent obesity in children may help lower kids’ blood pressure, according to a new review of past studies. Researchers found that programs targeting both diet and physical activity were more effective than programs that focused on one or the other. Although it’s generally thought of as a disease of middle-aged and elderly people, children can also develop high blood pressure, or hypertension. The American Heart Association recommends that children have yearly blood pressure checks, saying that detecting high blood pressure early will improve a child’s health.