Omega-3 fatty acids are essential for maintaining heart health, brain function, and eye health, as well as reducing inflammation. While supplements are marketed as 'high strength', a recent investigation by consumer watchdog Which? found that many of these products contain surprisingly low levels of the crucial active ingredients, EPA and DHA. This raises concerns about consumers overpaying for ineffective supplements. The article highlights the importance of these fatty acids and provides a list of natural food sources, including salmon, mackerel, sardines, tuna, edamame beans, chia seeds, flax seeds, walnuts, and fortified products like eggs and butter. It also emphasizes the need for accurate labeling and transparency in the supplement industry to ensure consumers are getting what they pay for.