O dieta in care domina alimentele bogate in amidon, precum cartofii, orezul alb si painea alba, poate afecta serios functiile ficatului, potrivit unui studiu realizat de cercetatorii americani si publicat de revista Obesity.
Alimentele cu indice glicemic ridicat contribuie la aparitia unei disfunctii numite ‘ficat gras’. Ce se intampla: grasimea se depune in jurul organului, ducand, in timp, la insuficienta hepatica. Cercetatorii de la spitalul de pediatrie din Boston au descoperit acest lucru in urma unor experimente pe cobai. Animalele au fost hranite timp de sase luni fie cu alimente cu indice glicemic ridicat, fie cu produse cu indice glicemic scazut.
Indicele glicemic e un mod de a masura viteza cu care energia extrasa din alimente e absorbita de corp. Alimentele cu indice glicemic ridicat sunt repede absorbite in fluxul sangvin, provocand ridicarea nivelului de zahar din sange, care la randul lui duce la o crestere a insulinei. ?n momentul in care nivelul insulinei creste, nivelul de zahar in sange scade rapid, provocand ameteli. Din acest motiv, alimentele cu indice glicemic ridicat ar trebui sa fie consumate doar ocazional.
Dupa sase luni, cobaii hraniti cu alimente cu indice glicemic ridicat aveau de doua ori mai multa grasime in or-ganism, in sange si in ficat. Profesorul David Ludwig, coordonatorul studiului, a declarat ca rezultatele se pot aplica si la oameni, atat la adulti, cat si la copii.
Pe lista alimentelor cu indice glicemic ridicat sunt incluse piureul de cartofi, painea alba, chipsurile, unele cereale pentru micul dejun bogate in grasimi si zaharuri, orezul alb. Printre alimentele cu indice glicemic moderat se numara musli, cartofii fierti, lipia, mierea si painea integrala, iar printre produsele alimentare cu indice glicemic redus se numara arahidele prajite si sarate, painea de secara, laptele integral si degresat, spaghetele, morcovii fierti, fasolea boabe fiarta, fructele, nucile si lintea.
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