Seafood is packed with essential vitamins London - Arabstoday Including one portion of seafood in your weekly diet may halve the chances of suffering a heart attack, it has been revealed. Prawns, crabs, squid and octopus are just as packed with vitamins, minerals and fish oils as fish like salmon or cod, the Daily Mail reported. They all contain Omega-3 – a key fatty acid known to help with heart health. Although seafood contains cholesterol, it’s actually foods high in saturated fats – the type found in cheese, red meat and fast food – that increase levels of bad cholesterol in the body. So seafood is unlikely to have a major impact on your blood cholesterol levels. However, the NHS advises against eating raw shellfish and raw seafood during pregnancy.