Men who eat deep-sea fish once a week or consume a moderate dose of omega-3 fatty acids may help reduce the risk of heart failure.
From 1998 to 2004, researchers from the United States and Sweden followed 40,000 Swedish men aged 45 to 79, recording their dietary details and health conditions. The results showed that men who consumed fish rich in unsaturated fatty acids, such as salmon, mackerel, sardines, and white salmon, at least once a week had a 12% lower incidence of heart failure compared to those who never ate fish.
At the same time, men who consumed approximately 0.3 grams of omega-3 fatty acids daily (found in fish liver oil and fish oil) had a lower incidence of heart failure compared to those who consumed less daily.
Interestingly, consuming excessive amounts of fish or larger doses of omega-3 fatty acids daily did not protect the heart and even posed the same risk of heart failure as those who never consumed fish or omega-3 fatty acids.
This result may lead to lifestyle changes. However, there could be an alternative explanation for this result. Individuals with poorer health may be more inclined to consume excessive amounts of fish or fatty acids to enhance nutrition, and therefore, the occurrence of heart failure may be related to their overall health.
