Everyone wants to know the same thing: Is there anything I can do to slow aging? Not reverse it. Not stop it. Just slow it down.
A recently published analysis by Bischoff-Ferrari and colleagues, Individual and additive effects of vitamin D, omega-3 and exercise on DNA methylation clocks of biological aging in older adults from the DO-HEALTH trial, suggests that certain lifestyle interventions may modestly slow biological aging. While the effects were not dramatic, even small changes are meaningful in aging research and may translate into real health benefits over time.
Chronological Age vs. Biological Age
Aging isn’t just about the number of birthdays you’ve had.
- Chronological age is your age on paper.
- Biological age reflects how well your body is actually functioning.
Two people can both be 75 years old, yet one may function like someone much younger. That difference is biological aging.
Researchers now estimate biological age using DNA methylation clocks—laboratory tools that analyze chemical markers on DNA that change as we age. Newer versions of these clocks are strongly linked to disease risk, physical decline, and mortality. These are not wellness trends; they are serious scientific instruments increasingly used in aging research.
The DO-HEALTH Trial: A Rare, High-Quality Study
The DO-HEALTH trial followed more than 2,000 adults aged 70 and older across Europe for three years. Participants were generally healthy and living independently.
They were randomly assigned to receive:
- Omega-3 supplements
- Vitamin D
- A simple home-based strength exercise program
- Or different combinations of the three
For this analysis, researchers focused on 777 participants who had high-quality DNA methylation data at the beginning of the study and again three years later.
What Actually Worked?
The most consistent finding was seen with omega-3 supplementation.
Participants who took omega-3s showed a measurable slowing of biological aging across several advanced epigenetic clocks. When translated into practical terms, this amounted to roughly 3 to 4 months of slowed biological aging over three years.
That may sound small—but aging is a slow process. In this field, effects of this size are meaningful.
Vitamin D and exercise by themselves did not consistently slow biological aging. However, when combined with omega-3, the effect was stronger on certain aging measures. In simple terms, omega-3 appeared to be the foundation, with vitamin D and exercise acting as supportive additions.
Why This Matters for Hair Health and Hair Restoration
Hair is one of the most biologically active tissues in the body. Hair follicles are highly sensitive to inflammation, oxidative stress, hormonal signaling, and overall biological aging. As biological aging progresses, follicles tend to miniaturize, cycle less efficiently, and spend more time in resting phases—key drivers of hair thinning.
While this study did not measure hair growth directly, the implications are still relevant. Interventions that slow biological aging—particularly those that reduce inflammation and improve cellular signaling, such as omega-3 fatty acids—may help create a healthier environment for hair follicles to function.
In hair restoration, long-term success is not just about surgical technique. It also depends on how well transplanted follicles survive, cycle, and age over time. Optimizing overall health—including evidence-based nutrition and regular strength-based exercise—supports that process.
Hair health does not exist in isolation. It reflects the biology of the entire body. Studies like this reinforce an important principle: supporting healthy aging supports healthier hair—both before and after hair restoration.
Next Steps
If you’re noticing changes in hair density, shedding, or are considering hair restoration, supporting your biological health matters. At the Gabel Center for Hair Restoration, Dr. Gabel takes a comprehensive, evidence-based approach that looks beyond the procedure itself—because long-term hair health is influenced by inflammation, cellular aging, and overall physiology. Whether you’re exploring prevention, medical therapy, or surgical restoration, a personalized plan can make a meaningful difference over time. To learn more, we invite you to contact us or schedule a consultation to discuss your goals and options with Dr. Gabel and his team.
Reference
Bischoff-Ferrari HA, Gängler S, Wieczorek M, Belsky DW, Ryan J, Kressig RW, Stähelin HB, Theiler R, Dawson-Hughes B, Rizzoli R, Vellas B, Rouch L, Guyonnet S, Egli A, Orav EJ, Willett W, Horvath S. Individual and additive effects of vitamin D, omega-3 and exercise on DNA methylation clocks of biological aging in older adults from the DO-HEALTH trial. Nat Aging. 2025 Mar;5(3):376-385. doi: 10.1038/s43587-024-00793-y. Epub 2025 Feb 3. PMID: 39900648; PMCID: PMC11922767.
