# The 7 Habits of People Who Age Slower \| Dr. Steve Horvath

- Channel: [FoundMyFitness](https://www.youtube.com/channel/UCWF8SqJVNlx-ctXbLswcTcA)
- Published: 2026-06-10
- Source video: [Watch on YouTube](https://youtube.com/watch?v=3pRiY2zHt8c)
- Read on ReadTube: https://www.read.tube/p/videos/3pRiY2zHt8c
- Language: Original (source language)

## Summary

**Horvath on Slower Aging**

Dr. Steve Horvath explains how epigenetic clocks measure biological aging and why different clocks capture different parts of the process. He says strong evidence exists for some interventions, but effects are usually modest in healthy people and larger when they correct clear problems like obesity, inflammation, or deficiency.

Dr. Steve Horvath argues that biological aging is best understood as measurable damage accumulation across many levels, not as a single number. His epigenetic clocks, built from DNA methylation patterns, are designed to estimate different things: some mainly track chronological age, others track mortality risk, inflammation, smoking exposure, metabolic dysfunction, or the pace of aging. He stresses that disagreement between clocks is expected because each one is trained on different signals and biological layers.

He explains that GrimAge is the strongest current predictor of mortality risk, while DunedinPACE is designed to capture the rate at which aging is progressing. Both can respond to interventions, but the effect sizes are often small unless the intervention produces a major physiologic change. Horvath says methylation patterns likely act as a memory of long-term stressors and damage, which is why they can predict future risk better than some direct clinical markers in certain settings.

He highlights several interventions with the best evidence:
- Antiretroviral therapy in HIV can reverse several years of age acceleration.
- Anti-TNF therapy can reduce age acceleration in inflammatory disease.
- Strong weight loss interventions, especially in obesity, can improve multiple clocks.
- Omega-3 supplementation shows a consistent but modest benefit.
- Multivitamins can modestly slow aging signals, especially in brain-related outcomes.
- Higher levels of exercise, especially substantial cycling or vigorous training, can improve clocks more than light activity.

He is cautious about hype around dramatic reversal claims, saying they are more believable when people start from an unhealthy baseline and then correct obesity, deficiency, smoking, or inflammation. He rejects claims that a clock can predict an exact day of death, noting that mortality estimates have wide error bars and should be treated as relative risk, not destiny.

The conversation also covers important blind spots and future directions. Horvath says current clocks do not fully capture senescence, telomeres, or every form of DNA damage, and they do not prove causation. He is optimistic about better tools, including organ-specific clocks, single-cell clocks, AI-based models, and eventually surrogate endpoints for clinical trials. He also points to the growing value of lifestyle, social connection, sleep, and stress reduction, while noting that the field still needs larger, more rigorous studies to determine which biomarkers are best for real-world use.