The claimWhat Eric actually said
In a Q&A tied to his 2025 book on healthy aging, Topol described starting a deliberate strength training program in his seventies and using a DEXA body composition scan to track the muscle he was adding. He framed it as a correction to his own long-standing cardiology emphasis on aerobic exercise alone. The comment is about his personal training, made in the context of arguing that muscle matters for aging.
- agingwithstrength.com: Eric Topol in their own words
- Momma H et al., British Journal of Sports Medicine, 2022: muscle-strengthening activities associated with lower risk of all-cause mortality and major non-communicable diseases in pooled prospective cohorts.
- Liu CJ & Latham NK, Cochrane Database of Systematic Reviews, 2009: progressive resistance strength training improves strength and physical function in older adults across randomized trials.
- Fragala MS et al., Journal of Strength and Conditioning Research, 2019: NSCA position statement concluding resistance training is safe and effective for older adults including frail populations.
Why it mattersWhy this matters for longevity
Muscle mass and strength decline steadily from midlife, and low strength tracks closely with disability and falls.
Most public exercise messaging still defaults to steps and cardio, leaving resistance work as the commonly skipped half.
The randomized evidence here is in older adults specifically, not extrapolated down from young athletes.
The evidenceWhat the science says
A 2022 meta-analysis of prospective cohorts found muscle-strengthening activity associated with roughly 10 to 17 percent lower risk of all-cause mortality, cardiovascular disease and total cancer, with the association appearing at modest weekly volumes. Cochrane's review of progressive resistance training trials in older adults found consistent gains in strength and in physical function measures such as gait speed and chair rise, and the National Strength and Conditioning Association's position statement concludes resistance training is safe and effective across the older adult range, including the frail.
The honest caveat: no randomized trial has tested whether lifting weights makes people live longer, because that trial would take decades. The mortality signal comes from observational cohorts, where people who lift are also different in other ways. The evidence supports better strength, function and independence, not a guaranteed extra year of life, and a DEXA scan showing added muscle is a progress marker, not proof of a longer lifespan.
TakeawayThe honest takeaway
The practical lesson
Two or three short resistance sessions a week covering the major muscle groups is where most of the measured benefit sits, and it is never too late to start.
RelatedRelated habits
Each of these is a habit you can build on its own. Explore them through the Topics index.
SupplementsThe supplement angle: Protein and vitamin D
Support a habit, do not replace one
Older adults training for strength often fall short on total daily protein, and vitamin D status is worth checking given its role in muscle function. Neither replaces the training itself, and dosing is a conversation for a clinician.
Supplements can support good habits. They do not replace sleep, movement, nutrition, or medical care. Talk with your healthcare provider before starting anything new.
This is educational commentary, not medical advice, and does not imply that Eric Topol endorses, is affiliated with, or uses Winning Longevity or any product. We critique the claim and the evidence, not the person. Any direct quote is a placeholder until sourced. Talk with a qualified healthcare provider before changing your routine. See our health disclaimer.
