A major Swedish study suggests that longevity may be predicted by routine blood markers rather than genetics alone.
People who lived to 100 tended to have stable, balanced levels of blood sugar, kidney function, and inflammation from midlife onward. Extreme values in these markers were linked to shorter lifespans.
The findings highlight that long-term healthy habits and steady biological balance may matter more than “perfect genes” when it comes to reaching a century of life.
