The oldest living person in the U.S. has turned 115 and advises people to 'speak their mind and don’t hold their tongue.'

This past week, Elizabeth Francis, a 115-year-old resident of Houston, celebrated her birthday and holds the title of the oldest living person in the U.S.

After Edie Ceccarelli's death at the age of 116 in February, Francis became the oldest living American. Earlier this year, LongeviQuest, an organization that tracks and compiles information about the world's oldest people, awarded Francis a plaque.

LongevQuest recognized Francis as the fourth oldest living person in the world at the age of 115.

Ben Meyers, a longevity researcher and CEO of LongeviQuest, advised The Washington Post that when seeking advice on living a long, fulfilling life, one should speak their mind and not hold back.

TODAY.com reports that she advises people to "do their best to love everyone."

Ethel Harrison, Francis' granddaughter, revealed that her longevity may be linked to her genetics, as her sister lived to 106 years old and her father passed away at 99.

Dorothy Williams, Francis' daughter, is 95 years old and resides with her mother. According to Harrison, they have several caregivers.

"According to Harrison, they relish sitting together to watch old episodes of 'Good Times' and 'The Jeffersons' on TV and also enjoy 'The Price is Right'. They both feel fortunate and blessed to be together at this stage of their lives."

Francis 'has done everything right,' doctor says

Dr. Holly Holmes, a geriatric physician, stated that Francis lived her life "perfectly" for longevity, as reported by ABC 13.

Holmes stated that Francis's frequent movement, healthy diet, and emphasis on social connections helped her avoid loneliness and isolation.

Francis claimed to eat everything, but Harrison observed that her grandmother grew her vegetables in the backyard and rarely visited fast food restaurants, such as Chick-fil-A.

Harrison stated that Francis never smoked, drank alcohol, learned how to drive, and instead relied on public transportation or walking to get around.

Dr. Thomas Perls, a researcher who has studied thousands of centenarians, says that many of Francis' lifestyle choices increase a person's chances of living to age 90 or older.

Those practices include:

1. Managing stress
2. Getting enough good quality sleep
3. Eating healthy foods
4. Exercising often
5. Avoiding smoking

"According to Harrison, who spoke to The Washington Post, his grandmother now sleeps more than she did six months ago, but she remains candid and forthright in her opinions."

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