Specifically, fish-lovers in Sweden were 16 percent less likely to experience a stroke over a 10-year-period, relative to women who ate fish less than one time a week.

"Fish consumption in several countries, including the U.S., is far too low, and increased fish consumption would likely result in substantial benefits in the population," told Dr. Dariush Mozaffarian of the Harvard School of Public Health, who reviewed the findings for Reuters Health.

When choosing fish to eat, it's good to opt for fish that are rich in omega-3 fatty acids, found most abundantly in fatty fish like salmon, mackerel and albacore tuna. "But any fish is better than none," Mozaffarian noted.