Omega-3 fatty acids and brain resistance to ageing and stress: Body of evidence and possible mechanisms

► ω-3 Dietary intakes in western countries are too low to meet brain DHA requirements. ► Human studies suggest that dietary ω-3 help the brain cope with ageing. ► ω-3 Modify stress responses, glutamatergic neurotransmission and glial reaction. ► The cerebral impairments due to ageing could thus be relieved by dietary ω-3.