A new study published in the journal Nature suggests that a simple, widely available supplement could help Americans live longer and stay healthier as they age.
Researchers have found that omega-3 fatty acids—commonly taken for heart and brain health—may also slow biological aging and reduce the risk of cancer and frailty.
The research was part of a major clinical trial out of Switzerland called DO-HEALTH, which followed 777 adults between the ages of 70 and 85 over a period of three years. Participants in the study took 1 gram of omega-3 daily, along with other optional health measures like vitamin D supplements and a basic home exercise program.
At the end of the trial, scientists discovered that omega-3 on its own helped slow biological aging markers by the equivalent of three to four months. When combined with vitamin D and strength training three times a week, the effects were even greater—including a 61% drop in cancer risk and a 39% reduction in what researchers called “pre-frailty,” an early stage of weakness that can lead to more serious health problems in seniors.
Professor Heike Bischoff-Ferrari of the University of Basel, who co-authored the study, described the results as a breakthrough. “DO-HEALTH is the largest clinical trial to date showing that we can rejuvenate biological aging in humans aged 70 and older, and this with simple strategies,” he said.
Medical experts in the U.S. are also taking note. Dr. Marc Siegel, Fox News’ senior medical analyst, praised the findings as “significant” and emphasized the value of omega-3’s antioxidant and anti-inflammatory properties. He said inflammation is a key factor behind many chronic illnesses that affect aging Americans, including heart disease, high cholesterol, and cancer.
While omega-3 fatty acids are naturally found in fatty fish like salmon, tuna, and mackerel, the study used algae-based supplements, which researchers called both safe and effective.
Doctors recommend speaking with a healthcare provider before starting any new supplement regimen, especially for those with existing conditions or who are taking other medications.