The Secret to Living to 100? It’s Not Good Habits

If you want to live to your 100th birthday, healthy habits can only get you so far.

Research is making clearer the role that genes play in living to very old age. Habits like getting enough sleep, exercising and eating a healthy diet can help you stave off disease and live longer, yet when it comes to living beyond 90, genetics start to play a trump card, say researchers who study aging.

“Some people have this idea: ‘If I do everything right, diet and exercise, I can live to be 150.’ And that’s really not correct,” says Robert Young, who directs a team of researchers at the nonprofit scientific organisation Gerontology Research Group.

About 25% of your ability to live to 90 is determined by genetics, says Dr. Thomas Perls, a professor of medicine at Boston University who leads the New England Centenarian Study, which has followed centenarians and their family members since 1995. By age 100, it’s roughly 50% genetic, he estimates, and by around 106, it’s 75%.

Knowing what enables some people to live very long lives has consequences for the rest of us. Ongoing research into very old agemay help provide insight that could eventually be used to develop drugs or identify lifestyle changes to help people live healthier for longer, says Dr. James Kirkland, president of the American Federation for Aging Research.

Who makes it to 100

Centenarians make up a growing share of the U.S. population. There are about 109,000 centenarians living in the country in 2023, according to Census Bureau projections, up from about 65,000 10 years ago, thanks in part to decades of advances in medicine and public health.

Despite a decline in life expectancy, which dropped to 76.4 in 2021, Perls estimates that roughly 20% of the population has the genetic makeup that could get them to 100 if they also make consistent healthy choices.

Not only do centenarians live longer, but data suggest they manage to avoid or delay age-related diseases like cancer, dementia and cardiovascular disease longer than the general population. Among the New England Centenarian Study participants, 15% are “escapers,” or people with no demonstrable disease at the age of 100; some 43% are “delayers,” those who didn’t develop age-related disease until age 80 or after.

Chuck Ullman, who is 97 and lives in a retirement community in Thousand Oaks, Calif., says he is free of health problems—aside from a sore right shoulder from a recent electric biking accident—and has no desire to live to a particular age. He hopes to live as long as he feels good and can do the things he loves, such as woodworking, attending political discussion groups and getting dinner with some of his many friends.

“There are 350 residents here, and I have 350 friends,” Ullman says of his community. He also spends time with Betty, his wife of 77 years. “My objective is to enjoy each and every day that comes along.”

Genes that matter

Researchers have identified some genes and combinations of them that are associated with longevity, such as the presence of a variant of what’s known as the apolipoprotein E gene called e2, a trait thought to help protect against Alzheimer’s. They emphasize each trait is a small piece in a large, complicated puzzle, which can factor in socioeconomic status, race and ethnicity, and climate.

Living past 100 requires a combination of many genetic variants, each with a relatively modest effect, says Perls of the New England Centenarian Study.

Gene variants that offer protective qualities, such as repairing DNA damage, are especially beneficial, he says.

People who are curious about how long they might live should start by looking at their family histories. Your relatives’ lifespans are one of the strongest predictors of longevity, says Perls. Ullman, the 97-year-old, says his mother lived to 90.

If multiple members of your family have lived into very advanced age, “you’ve potentially won a much greater chance of having purchased the right lottery ticket,” says Perls.

Good habits

Neurologist Dr. Claudia Kawas has been tracking the habits of the “oldest old,” those older than 90, in Southern California since 2003, as part of a study at the University of California, Irvine. She and a team of researchers have found links between longevity and even short amounts of exercise, social activities such as going to church, and modest caffeine and alcohol intake.

“Super-agers,” or people over the age of 80 whose cognitive abilities are on par with those 20 to 30 years younger, reported having more warm, trusting, high-quality relationships with other people than cognitively normal participants, investigators at Northwestern University found.

“Keeping in good relationships could be one key to health span,” says Amanda Cook Maher, a neuropsychologist at the University of Michigan and lead author of the study.

Your outlook also matters. Harvard researchers identified a link between optimism and longer lifespans in women across racial and ethnic groups. Among the study participants, the 25% who were the most optimistic had a greater likelihood of living beyond 90 years than the least-optimistic 25%, according to the 2022 study published in the Journal of the American Geriatrics Society.

Jeanne Case, 100, says she has taken a glass-half-full approach to life.

She plans to outlive her colon and skin cancers and keep enjoying swing music and Mexican food as long as she feels physically and mentally well.

A day in her life can include walking a mile, conversing with her writing group or noshing on fish tacos with friends. The Irvine, Calif., resident has always exercised but also enjoys indulgences like cheesecake and lemon bars.

“I try not to let stress bother me,” she says.

What’s more important than being a good employee right now? Looking like a good employee in the eyes of AI productivity trackers that more managers are using to evaluate their teams.

Employee-monitoring systems are especially popular at tech companies and are also used by other white-collar firms that want to probe how people spend company time. The scary thing: You might not even know you’re being watched because many states don’t require disclosure.

Metrics can include performance data that is undoubtedly relevant, such as sales results. But it also can employ dubious proxies like keyboard strokes and how often your computer screen goes into sleep mode.

We generally accepted, or at least understood, heightened surveillance during the work-from-home era. Back then it seemed reasonable for bosses to keep tabs on employees they couldn’t see.

Yet the oversight has only escalated, and tensions are rising, too.

A group of former Meta Platforms employees alleges in a lawsuit that the company used a “constellation of internal artificial-intelligence systems” when it began laying off about 10% of its workforce in May. Meta says humans make termination calls.

However that case shakes out, a couple of things are clear. Companies eager to gauge which employees are locked in now have sophisticated AI monitoring systems at their disposal. And they believe they have leverage in a tepid labor market.

So while we may chafe at having our worth reduced to numbers on the boss’s productivity dashboard, we have to play the game as it’s being played. Here are some tips, based on conversations with people who make employee monitoring systems—and others who game the systems.

Be meticulous about your calendar

Calendar integration is one way that productivity trackers have gotten more advanced and, ostensibly, fairer.

Let’s say you make an old-fashioned phone call or attend an in-person meeting. Your Outlook or Slack status may switch to “away,” making you appear as inactive as if you were taking an extended coffee break.

Employee monitors like one made by a company called Insightful cross-check your online status with your calendar to see whether there is a valid reason for your apparent inactivity. If that call or meeting is on your schedule, then the system will recognize that you are busy offline. If nothing is on the books, it could look like you’re slacking off.

Hit the activity sweet spot, around 80%

Let’s not go any further without addressing the underlying question: How much downtime is permissible during the workday? After all, people have been scared to let managers see anything non-work-related on their screens since personal computers first arrived in offices.

No one knows this better than Roger Wagner, who is widely credited with creating the first “boss button” in the early 1980s. He designed a keyboard shortcut to instantly display a spreadsheet if the boss walked by your cubicle while you were playing a computer game. Boss buttons have been features of countless diversions since. (I confess to using one built into a March Madness streaming app.)

Wagner, the founder of computer-education company 1010 Technologies, says his original design was a joke—more of a commentary on overbearing managers than a cover for lazy employees. Good bosses understand workers need mental breaks throughout the day, he says.

This matches what I heard from Insightful Chief Executive Ivan Petrovic. He says customers that use his company’s workforce-management platform don’t expect employees to stay on task 100% of the time.

“On average companies are aiming for 60% to 80% of your time being utilized for work during the day,” he says.

Go ahead and exhale. It’s probably OK to watch an occasional YouTube video at your desk.

And if you’re going to artificially inflate your activity level, be careful. Hitting 90% could look suspicious.

Get physical

So don’t leave your mouse jiggler on all day. Choose the right one if you must resort to shenanigans.

There are lots of software applications that mimic the movements of a computer mouse, so you can appear to be working while away from your desk. There are also devices that plug into computer ports and do the same thing.

Corporate cybersecurity systems increasingly block these apps and devices, and productivity trackers claim to be able to detect them. But some workers swear by mouse docks, like one made by Tech8 USA, that keep cursors moving. The company originally made mouse-moving software but now focuses on physical jigglers.

“People are drawn to mechanical solutions because they’re so simple and don’t require software,” says Tech8 Marketing Director Sam Matthews. “As monitoring technology becomes more sophisticated, that distinction has become even more relevant.”

Use AI, but not too much

Another popular metric for employee-monitoring systems is AI usage. Companies want to know who is embracing new tools, and it can be tempting to think more is better.

“There’s a performative aspect where employees overblow their usage of AI so that they appear relevant in the organization,” says Andrea Derler, principal researcher at Visier, which helps companies track and analyze employee work habits.

In a recent Visier survey of 1,000 U.S. workers, 48% admitted to exaggerating their AI usage.

This is already an outdated strategy. Using AI for everything used to score points for experimentation. Now it can seem wasteful because many companies are watching AI token spending more carefully.

Look, productivity theater has always been part of work. Most of us aren’t trying to cheat the system, but expectations are changing so quickly that we need to be savvy about what the latest employee trackers are looking for.

Sometimes it takes a little gamesmanship to get full credit for our contributions.