While fish oil supplements, rich in omega-3 fatty acids, are known to be good for heart health, a new study showed that regular consumption may raise the risk of heart disease and stroke.  

For the study, an international team of researchers from China, the UK, and the US analysed the health of 415,737 participants (55 per cent women), aged 40-69, who regularly consumed oily and non-oily fish and fish oil supplements.