n-3 long-chain polyunsaturated fatty acids (LCPUFA) have anti-inflammatory properties and appear effective as adjuvant therapy for depression. In animal models, n-3 LCPUFA deficiencies can result in hypofunctioning of the dopamine mesocorticolimbic pathways which are related to reward and dependence. Nicotine results in an elevation of dopamine in the nucleus accumbens which is associated with the pleasurable sensations related to nicotine use. It has been hypothesized that correcting the hypofunctioning dopaminergic system through n-3 LCPUFA supplementation might reduce nicotine cravings. Taken together, these studies suggest that supplemental n-3 LCPUFA might be useful in preventing smoking relapse.