Scientists of the University of Edinburgh (the United Kingdom) have realized an investigation between 24 middle-aged men and women to whom they have administered on a daily basis a grenade juice bottle during four weeks. The results have demonstrated not only the reduction of the not esterify or free fatty acid levels (NEFA), but also the diminution of the level of arterial tension. Acids NEFA are fatty acids together with albumen, that can come from the diet or of the synthesis in the organism and they are accumulated in the abdomen, being the main cause of cardiac, renal problems and cerebrovascular accidents between the middle-aged people.