What is the healthiest fish to eat in the UK?
Oily fish – such as salmon and sardines – is also particularly high in long-chain omega-3 fatty acids, which can help to keep your heart healthy. Most of us should have more fish in our diet, including more oily fish. There is different advice for women who are pregnant or breastfeeding, and children and babies. Also, in high doses, both prescription omega-3s and fish oil supplements can increase the risk of atrial fibrillation or A-fib, which causes the heart to beat rapidly; and also lead to an increased risk of bleeding.