Reaching 100

How does somebody live to be 100? Genes, environment or just luck?

In the 20th century the average life expectancy rose 30 years, the greatest gain in 5,000 years of human history, according to health information source Prevention, which also said that the centenarian club increased 51% between 1990 and 2000.

What explains this progression? Advances in health, education, disease prevention and treatment certainly played key roles. But, Gregg Easterbrook reported in The Atlantic in 2014, “Viewed globally, the lengthening of life spans seems independent of any single, specific event. It didn’t accelerate much as antibiotics and vaccines became common. Nor did it retreat much during wars or disease outbreaks.”

Documentarian Jason Prall interviewed centenarians in nine countries in an attempt to gauge the impact of lifestyle, environment and mindset on longevity. Some of the common denominators he identified were simple yet impactful choices in food, exercise and social interaction. “If you want to keep your brain young, music, movement and engaging with others, those three things, I would say are the most important things you can do,” Prall said. “We also need to have fun, enjoy our lives, find something meaningful and be passion-driven, whether it’s art or whatever it is.”

Most researchers agree that key elements of a supportive living environment include exercise, stimulating interpersonal relationships, a positive attitude about challenges, and access to green space, health care and good nutrition. “Constant interaction with other people can be annoying, but overall seems to keep us engaged with life,” said Thomas Perls, a professor at Boston Medical Center.

But of course it’s not that simple. “Lifestyle studies of centenarians can be really puzzling,” noted Brian Kennedy, CEO of the Buck Institute, a research facility dedicated to extending the human life span. “They smoke more and drink less than we might guess. Few are vegetarians. Nothing jumps out as a definitive cause of their long lives.”

Added Luigi Ferrucci, director of the Baltimore Longitudinal Study of Aging, “On some of the big questions, such as whether longevity is caused mainly by genes or mainly by lifestyle and environment, we just have no idea at all.”

No doubt heredity plays a role – some researchers attribute up to 30% of longevity to heritable traits. John Rowe, a health policy professor at Columbia University and a former CEO of Aetna, cast a vote for education: “If someone walked into my office and asked me to predict how long he would live, I would ask two things: What is your age, and how many years of education did you receive?”

It seems there’s no absolute proof of the path to 100 but plenty of clues. As Easterbrook said, “You should watch your weight, eat more greens and less sugar, exercise regularly, and get ample sleep. But you should do these things because they are common sense—not because there is any definitive proof that they will help you live longer.”

“Bottom line: Keep an eye on these environmental factors. After all, they make up 65% to 80% of your health,” added medical research information provider MDLinx.

Yardi software solutions help elevate care and quality of life for senior living community residents. Learn how.

SHARE POST

Facebook LinkedIN

AUTHOR

Joel Nelson, senior marketing writer, joined Yardi in 2007. His byline has appeared in New York Real Estate Journal, Canadian Property Management and Los Angeles Lawyer, among others. He has won multiple awards from major professional organizations including the International Association of Business Communicators and Public Communicators of Los Angeles. Joel earned a bachelor’s degree from Pomona College.

Recent articles

Forbes Best Awards 2026

Yardi is a Forbes Best Company & Best Large Employer for 2026

Yardi earned the No. 388 spot on Forbes’ “America’s Best Companies for 2026” list and No. 477 on the “America’s Best Large Employers” list.

Woman looking sternly into laptop

What to do when CRE feels harder than it should

Many CRE performance issues stem from disconnected systems, not people. Learn where gaps appear across the lifecycle, plus how they increase cost and risk.

02 / 18 / 26

Exterior of multifamily building

2026 multifamily reports: Download the latest from Yardi Matrix

Using with the multifamily industry’s best market intelligence, Yardi Matrix's monthly reports summarize trends and forecasts that support well-informed investment decisions.

02 / 18 / 26