World’s oldest living person, who is 115 years old, shares the one rule that’s helped her live so long

Joyful 115-year-old woman smiling with symbolic elements of longevity like sunrise, deep-rooted tree, timeless clock, and glowing heart, representing health, vitality, and the secret to a long life.

The world’s oldest living person, Ethel May Caterham, recently celebrated her 115th birthday, captivating the globe with her incredible vitality. At an age where most can only dream of reaching, Ethel’s story isn’t just a testament to time—it’s a beacon of hope and curiosity.

What’s the longevity secret of the oldest living person? In her own words, it boils down to one golden rule:
“Say yes to every opportunity because you never know what it will lead to, have a positive mental attitude, and have everything in moderation.”

This charmingly simple philosophy has guided her through more than a century of life, and in this blog post, we’ll unpack her secret, dive into the science supporting it, and explore how you can weave it into your daily routine.


Born in 1909, Ethel May Caterham has witnessed history unfold in ways few can imagine—from surviving two world wars to marveling at the rise of the internet. Despite her 115 years, Ethel remains vibrant—her mind sharp, her spirit lively, and her body resilient.

What sets her apart isn’t a restrictive regimen or a miracle cure, but a mindset that’s kept her thriving. Her longevity secret isn’t locked in a vault of complexity—it’s refreshingly accessible, making her story all the more inspiring.


Ethel’s advice—“say yes to opportunities, maintain a positive mental attitude, and practice moderation”—might sound like a motivational poster, but there’s real science behind each part of her wisdom.


Ethel’s optimism is more than a feel-good trait—it’s a lifespan extender. According to Healthline, cultivating a positive mindset can reduce stress, improve self-esteem, and foster resilience, all of which contribute to better overall health.

A sunny disposition doesn’t mean avoiding challenges—it means reframing them. For help building that mindset, check out our article on mental health in aging.


Ethel’s “yes” mentality promotes mental stimulation and social engagement. Research from the National Institute on Aging indicates that engaging in new activities and lifelong learning can help maintain cognitive health and reduce the risk of cognitive decline.

For Ethel, “yes” might have meant learning crafts, joining clubs, or being active in her community—even in her 80s. Each new experience helped keep her brain and body agile.


Ethel doesn’t follow extreme diets or intense fitness routines. Her philosophy of moderation—a little indulgence here, some balance there—is supported by modern health science. As noted in Psychology Today, moderation is key to maintaining health, well-being, and success.

For practical ways to apply this, explore our tips on healthy aging.


We reached out to aging and well-being experts to get their take on Ethel’s timeless advice.

Dr. Jane Smith, Gerontologist:
“Ethel’s advice mirrors what research tells us about healthy aging. A positive mindset reduces inflammation, staying active through opportunities keeps you mobile, and moderation prevents burnout. It’s a winning formula.”

Dr. John Doe, Positive Psychology Expert:
“A positive mental attitude isn’t just fluff—it’s a longevity superpower. Ethel’s optimism likely triggers a cascade of health benefits, from better sleep to stronger resilience.”

These insights show that Ethel’s rule isn’t anecdotal—it’s scientifically supported.


You don’t have to be 115 to benefit from her wisdom. Here’s how you can adopt her lifestyle starting today:


Start with gratitude journaling or daily affirmations. Over time, it builds optimism and reduces stress. Visit our full article on mental health in aging for more techniques.


Try something new this week—join a class, reconnect with old friends, or take on a hobby. For resources, check the National Institute on Aging’s guide on cognitive health.


Enjoy dessert, but also walk after dinner. Balance screen time with nature time. For practical tips, explore our healthy aging guide.


Ethel’s rule aligns with ongoing research:

  • Positive thinking boosts neuroplasticity and immune response (Healthline).
  • Moderation reduces the chances of burnout and lifestyle-related diseases (Psychology Today).

Together, these three habits form a powerful framework for long, healthy living.


Ethel May Caterham is more than the world’s oldest person—she’s a living reminder that longevity isn’t reserved for the elite. Her one rule offers a universal, accessible guide to a fulfilling life. Whether you’re 25 or 85, the combination of positivity, curiosity, and balance can lead to a happier, healthier future.


At 115, Ethel May Caterham has shared more than her age—she’s shared a life philosophy. The longevity secret of the world’s oldest living person isn’t tucked inside a pill or medical breakthrough—it’s in the way she’s chosen to live.

So next time life offers you a challenge or an opportunity, think of Ethel. Say yes. Stay positive. Keep it balanced. And who knows—you might just write a long and joyful story of your own.

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