A 101-year-old former doctor who worked until he was 85 shared his 3 longevity secrets — including eating sardines

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101-year-old William sat in an armchair.
William is 101 years old and still exercises every day.

Sinai Health Foundation

A 90-year-old who started cycling at 65 still takes regular spin classes. His four longevity tips include having a positive attitude.

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Frank Ellis in a yellow Tour de France jersey with a flag and picture of the competition on the wall behind him.
Frank Ellis had a Tour de France-themed party for his 90th birthday this year.

Atria Senior Living

5 supplements a doctor who says he's reversed his age by 20 years takes every day

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Composite image of Dr. Michael Roizen, someone pouring fish oil supplements into their hand; some uncooked mushrooms.
Dr. Michael Roizen shared some of the supplements he takes every day.

Dr. Michael Roizen/ Getty

The world's oldest person just died at 117 with a clean bill of health. Here are her 5 longevity tips.

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Fabrizio Villatoro and Ben Meyers with María Branyas Morera, the oldest living person in the world.
Longeviquest centenarian experts with María Branyas Morera, who was the oldest living person in the world before she died.

Thomas Williams, LongeviQuest

A doctor who says he's reversed his age by 20 years eats these 7 foods every week to boost his longevity

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Dr. Michael Roizen surrounded by suggested foods
Dr. Michael Roizen eats seven foods a week that he hopes will boost his longevity.

Courtesy of Dr. Michael Roizen, Chris Clor/Getty, ArtemKutsenko/Getty, Rosemary Calvert/Getty, Tyler Le/BI

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 91-year-old interior designer still plays golf. She shared her three secrets to longevity.

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Sari Mainzer holding a golf club on a balcony.
Sari Mainzer still plays golf at 91 years old.

Atria Senior Living

A busy doctor says he's reversed his age from 78 to 57. Here's his simple, 3-step workout routine.

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Dr. Michael Roizen's headshot, a picture of a grey-haired man jogging from behind.
Dr. Michael Roizen fits exercise into his busy schedule.

Cleveland Clinic/Getty Images

4 traits shared by fit and active older people, according to a personal trainer whose eldest client is 96

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Lauren Hurst lifting dumbbells.
Lauren Hurst specializes in personal training for older adults.

Nick Cinea/ Lauren Hurst

A 102-year-old who runs a business shares her longevity tips, including walking every day

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Deborah Szekely leaning against a tree in a funky scarf.
Deborah Szekely is 102 years old and still works at her health resort, Rancho La Puerta.

Rancho La Puerta

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