We consulted nutrition experts for their best advice on how to eat for improved health.

Aimee Tritt, a dietitian in Minneapolis, said she sees the same pattern over and over: People want to become healthier, so they abruptly overhaul their diets, only to burn out a few weeks later.

If this has happened to you, know that you’re not a failure, said Ms. Tritt, who also teaches dietetics at the University of Minnesota. “The goal was the problem; it was too aggressive.”

A better approach is to set small intentions that you implement gradually, she said.

With that in mind, we asked about a dozen experts for the advice they would give for healthier eating. There’s something for everyone in their suggestions — consider trying one or two that resonate with you most.

Legumes like lentils, peas and beans are packed with protein and a suite of other valuable nutrients, said Christopher Gardner, a nutrition scientist and professor of medicine at Stanford University.

A cup of pinto beans, for example, provides about 16 grams of both protein and fiber, as well as plenty of iron and magnesium. And research suggests that replacing red and processed meats with plant proteins can reduce your risk of cardiovascular disease and earlier death. It also has the added benefit of being better for the environment.

Legumes are affordable and versatile, Dr. Gardner said. Toss white beans into a minestrone soup, steam edamame for a quick snack or purée some chickpeas to make hummus.

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