balanced diet reduced risk of chronic disease popular ‘superfoods’ antioxidants NHS website NHS balanced diet magically fix superfood superfood hotly contended NHS tend to be unprocessed Superfoods have different types. superfood as far as I can tell popular ‘superfoods’ unsubstantiated NHS superfoods category of superfoods superfoods NHS NHS, 2015 The NHS website superfood Superfoods have different types. rich in antioxidants and omega-3 fatty acids NHS, 2016 NHS guide to the trendy foods superfood no official definition of them