The consumption of oily fish in early childhood diets has been correlated to a reduction in the progression of asthma during adolescence and young adulthood. Extending these results to studies on supplementation with omega-3 fish oils has led to equivocal results, with no clear results. One subset of asthma patients is classified as steroid-treatment resistant, which may be attributable to eosinophil dysfunction. This in-vitro study investigated the prophylactic effect of enzymatically extracted salmon oil, as a proxy for eating fresh whole oily fish, on eosinophil function using allergic human peripheral blood eosinophils.
Source: Functional Foods in Health and Disease 2020; 10(8):357-367