A new study published in Nature Aging suggests that omega-3 and vitamin D supplements could help slow biological aging in older adults. Researchers found that daily intake of omega-3 fatty acids reduced age-related changes in genetic material, offering a modest but measurable impact on the biological aging process.
Study Overview
The study included 777 Swiss participants aged 70 to 91, who were divided into eight groups. One group was instructed to take one gram of algae-based omega-3 daily. Researchers used molecular biology tools known as epigenetic clocks to measure the effects of omega-3 supplementation on aging. The results showed that omega-3 slowed age-related genetic changes, with three different epigenetic clocks confirming this effect.
What Are Epigenetic Clocks?
Epigenetic clocks analyze molecular changes in the genome, particularly DNA methylation patterns, which correlate with aging in various organs. These clocks provide a reliable indicator of biological age and overall health. They are widely used to measure how the body deteriorates over time.
By studying DNA methylation, researchers can determine how interventions like diet or supplements impact the aging process. In this study, participants who took omega-3 supplements daily showed a slower rate of biological aging, aging three months less than those who did not take the supplement.
Key Findings
While a three-to-four-month reduction in biological age may seem small, experts suggest that even slight slowdowns in aging can have significant public health benefits. Heike Bischoff-Ferrari, a clinician-scientist at the University of Zurich, explained that slowing biological aging could reduce the prevalence of certain age-related health conditions.
The DO-HEALTH Trial
This study was part of the larger DO-HEALTH trial, a multicenter randomized controlled trial examining the effects of vitamin D, omega-3 fatty acids, and exercise on healthy aging. The trial included 2,157 generally healthy adults over the age of 70 from five European countries.
Participants were randomly assigned to different groups:
- A vitamin D supplement (2,000 IU)
- An omega-3 fatty acid supplement (1 gram)
- A 30-minute exercise program, three times per week
Blood samples were collected at the beginning and end of the study, and researchers used four different biological clocks to measure the rates of aging. According to Nature, the effects of omega-3 could be detected through DNA methylation patterns, which influence gene activity.
