Findings showed that extreme values—too high or too low—reduced odds of reaching 100. Centenarians generally had lower glucose, creatinine, and uric acid from their 60s onward, while moderate cholesterol and iron were associated with slightly higher survival chances.
Genetics Plays a Role, But Isn’t Everything
Longevity is influenced by genes like FOXO3A, APOE, PON1, TP53, and P21, which impact stress response, heart health, and cell protection. Blood type may slightly affect disease risk, but lifestyle and steady health habits have a far greater impact than any single gene.

What This Means for Everyday Life
You don’t need perfect labs to live a long life. Small, consistent habits over decades matter more than extreme measures:
- Keep blood sugar steady: limit sugary snacks, focus on protein, fiber, and healthy fats
- Support kidneys & liver: drink water, eat nutrient-rich foods, limit alcohol, manage medications
- Moderate cholesterol & iron: extremes aren’t ideal
- Reduce inflammation: stay active, sleep well, manage stress, eat fruits & veggies
Even a slightly healthier choice today compounds over decades, quietly tipping the odds in your favor.
The Big Picture
Decades of tracking show that longevity is multi-factorial: genes, blood markers, lifestyle habits, and a bit of luck all interact. Centenarians didn’t live perfectly—they lived well enough, consistently, every day.

“It’s about letting habits compound over time,” says researcher Karin Modig. Balanced meals, regular walks, quality sleep, and stress management are the quiet advantages that accumulate.
Your Turn: Share this with your family and friends! Start today with small, steady habits—because longevity is built one choice at a time.