Fish oil may increase risk of heart conditions and stroke, study finds

But supplements could reduce likelihood of heart attack for people who already have cardiovascular disease

Fish oil supplements may increase the risk of someone developing a heart condition or stroke, but could reduce the risk for those who already have cardiovascular disease, according to research.

Fish oil is a rich source of omega-3 fatty acids. The NHS recommends at least one portion of oily fish a week to help prevent the development of cardiovascular disease.