I'm a Greek Mediterranean diet expert. Here's my best advice for Americans who want to eat better on a budget.

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Dr. Artemis Simopoulos.
Dr. Artemis Simopoulos has spent decades studying the importance of essential fatty acids to human health and longevity.

Elena Noviello/Getty Images, Courtesy of Dr. Artemis Simopoulos.

A man on a quest to find the best diet tried eating ultra-processed foods for a month. He quit after five days.

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Composite image of Gavin Wren eating pasta, and a flat lay of junk food.
Gavin Wren tried eating only ultra-processed foods for a month, but gave up because he felt so ill.

Gavin Wren/Getty

New York's second oldest person just turned 112. She says staying single and eating Italian food helped her live so long.

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Louise Jean Signore in sunglasses, sat on her walker, at a park.
Louise Jean Signore recently turned 112. She's the second oldest person in New York.

Francis Perkins

A food policy expert is trying a different diet every month this year. Here's why the vegan and Mediterranean diets are his favorites so far.

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Photo composition of Gavin Wren.

Gavin Wren; Jenny Chang-Rodriguez/BI

A 78-year-old doctor says he's reversed his age by 20 years. Here are the 4 diet principles he follows to stay young.

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Dr. Michael Rozien alongside a plate of beet hummus.
Dr. Michael Rozien mostly eats a Mediterranean diet.

Cleveland Clinic/Getty Images

A chef from the Greek Blue Zone Ikaria shares 3 plant-based recipes inspired by the island where people often live to 100

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Chef Diane Kochilas (left) lentil salad (right)
Chef Diane Kochilas applies her Ikarian heritage to her cooking.

Christopher Bierlein/Vasilis Stenos

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