Participants in a recent National Institutes of Health study did just that.

On the ultraprocessed diet, they gained about a pound a week.

On the unprocessed diet, they lost about a pound a week.

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And they enjoyed both diets equally!

Today, average Americans get nearly 60 percent of their calories from ultraprocessed foods.

Spread two-thirds of mixture on a large surface.

Chicken nuggets

Cut 1 pound boneless, skinless chicken thighs into nuggets.

Dip into egg white; place on the bed of mixture.

Sprinkle remaining mixture atop the nuggets.

A bowl of apricot-pecan muesli

Coat a cookie sheet with olive oil.

Move the nuggets to the sheet.

Bake for 10 minutes, flip the nuggets, and bake for another 10 minutes.

A pair of blueberry-banana yogurt pops

You’ll gain:1 gram proteinYou’ll lose:7 grams sugar, plus red dye No.

40, blue dye No.

1, yellow dye No.

Measure another one-third cup blueberries; put some at the bottom of 4 small paper cups.

Dollop the yogurt mixture evenly into the cups.

Top with remaining berries.

Freeze, placing a wooden stick into each cup.

To serve, peel off the paper; let pops soften for 10 minutes.

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