In summary, DHA is a natural product, from the omega 3 polyunsaturated fatty acids, the therapeutic properties of which have been described in recent years and has shown cardio-vascular and metabolic beneficial effects, without recognized side effects. The highly purified DHA administration at high doses could be able to reverse, at least partially, lipid abnormalities associated with HAART and to exert a beneficial effect on fat redistribution in HIV-infected patients treated with HAART. To ensure non deleterious immunological treat in these sensitive poly-medicated patients, substantial changes in the functionality of dendritic cells and monocytic will be studied.