This agrees with earlier reports which showed an increase in PPARγ expression and an inhibition of secretion of inflammatory cytokine in patients with chronic obstructive pulmonary disease (COPD) upon treatment with PPARγ ligands such ligands is the n‐3 polyunsaturated fatty acids24 present in the African walnut.11 The gene discussed is PPARG; the disease is chronic obstructive pulmonary disease.