The 3 Best Predictors Of How Well You’ll Age

Dr. Juulia Jylhävä explains:

This will age well

Unlike many organisms, such as trees with their annual growth rings, your body neither knows nor cares how many times you’ve flown around the sun, and your biological age is actually a composite of a number of different ways of measuring biological aging, including:

1. Telomere shortening: gradual shortening of chromosomes’ end-caps (like the aglets on the ends of shoelaces) tracks cellular aging very usefully, because telomeres erode with each cell division, eventually limiting replication and making length an imperfect-but-useful marker of biological age.
2. DNA methylation: predictable shifts in methyl-tag patterns create quite reliable epigenetic clocks, because certain genomic sites change steadily with age. We don’t fully understand how this happens yet, but it’s clear that it does happen, like clockwork.
3. Inflammation: rising baseline immune-protein levels lead to inflammatory aging, sometimes called “inflammaging”, as repeated stressors and senescent cells raise chronic inflammation over time.

All that said, while age clocks (based on the above markers) can help guide personalized healthcare by detecting hidden disease earlier and tracking the effectiveness of interventions, it remains unclear whether these markers actually drive aging, or merely reflect it.

For more on all of this, enjoy:

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Take care!