Three recent studies offer more clues on how our increasingly industrialized food supply may be affecting our health.
NEW YORK — Chips, soda and frozen pizzas tend to be full of salt, sugar and fat, but now scientists are trying to understand if there’s something else about such processed foods that might be bad for us.
To more precisely identify the processed foods of most concern, scientists came up with a system that groups foods into four categories. It’s far from perfect, but the system says highly processed foods are made mostly of industrialized ingredients and additives, with little to no intact whole foods.
The 20 participants were allowed to eat as much or as little as they wanted, and were checked into a clinic so their health and behavior could be monitored.In another study based on questionnaires, researchers in France found people who ate more processed foods were more likely to have heart disease. A similar study in Spain found eating more processed foods was linked to a higher risk of death in general.
Hall noted the source of nutrients might make a difference. Fibers from whole fruits and vegetables, for instance, may be better for making people feel full than the types of fiber added to packaged foods such as cookies, yogurt and even soda. Meals in the two diets were rated as being similarly pleasant, but Hall noted it’s possible participants were saying what they thought they should. The processed food diet included foods like salted nuts and whole milk, compared with unsalted nuts and lower-fat milk for the unprocessed diet.
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