Do omega-3 supplements reduce heart attack risk in older adults?

The evidence we’ve reviewed leans toward the idea that consistent, long-term omega-3 supplementation could play a role in supporting heart health in this group. However, we did not see data on how this effect might vary by dose, type of omega-3, or individual health factors like cholesterol levels or existing conditions. We also did not see results from randomized trials or long-term follow-ups beyond the five-year window mentioned. Because only one assertion was analyzed, and no opposing data was found, we cannot say whether this effect is strong, consistent, or applies to everyone in this age group.

What we know is limited to this single claim, and while it points in one direction, more research would be needed to understand how reliably this benefit appears across different populations. We also don’t know if the benefit holds for people with existing heart disease or other risk factors — the evidence only covers those who are otherwise healthy.

If you’re an older adult without major health issues and considering omega-3 supplements, this one piece of evidence suggests it might help reduce your chance of a heart attack over time. But it’s not a guarantee, and it shouldn’t replace other proven habits like staying active, eating whole foods, or managing blood pressure.