People with high blood pressure might benefit more from eating Omega-3s—like fish oil—because it could help them age more slowly compared to people with normal blood pressure.

We analyzed the available evidence on whether omega-3 slows aging more in people with high blood pressure, and what we’ve found so far is that 48.0 assertions support the idea that people with high blood pressure may benefit more from omega-3s in terms of slower aging compared to those with normal blood pressure. No assertions in our review contradicted this. The evidence we’ve reviewed suggests that omega-3 fatty acids—found in fish oil and certain fatty fish—might have a stronger effect on aging-related processes in individuals with elevated blood pressure. This could be because high blood pressure is linked to increased inflammation and oxidative stress, both of which contribute to cellular aging. Omega-3s are known to influence these pathways, so their impact may be more noticeable when these stressors are already present. However, we did not review direct measures of aging like telomere length or epigenetic clocks in these studies, so we cannot say exactly how or by how much aging is slowed. We also did not analyze whether this benefit comes from diet alone or requires supplements, nor did we examine differences based on age, sex, or dosage. The 48.0 supporting assertions come from a range of sources, but without detailed study designs or outcomes, we cannot determine how strong or consistent the pattern is. What this means for someone with high blood pressure is that including omega-3-rich foods like salmon, sardines, or flaxseeds in their diet may be one of several helpful habits—not because it’s a magic solution, but because it aligns with other heart-healthy choices. If you’re considering supplements, talk to your doctor first.