French researchers analyzed the results of food questionnaires completed every six months by 44,551 adults ages 45 and older participating in an ongoing study on food habits. On average, more than 29 percent of their total calories came from ultra processed foods. During the seven-year study, 602 participants died. After carefully adjusting for other factors, the researchers concluded that every 10 percent increase in the amount of ultra processed foods consumed increased the risk of all-cause death by 14 percent. Ultra processed foods tend to be high in calories, carbohydrates, salt and fat and low in fiber and vitamins. In addition, they may contain harmful food additives and contaminants.