MI ▁between ▁ 3 0 ▁and ▁ 4 0 ▁and ▁one ▁weight - related ▁medical ▁condition , ▁such ▁as ▁di ab etes ▁or ▁high ▁blood ▁pressure . ▁However , ▁an ▁adjust able ▁g astr ic ▁band ▁may ▁be ▁used ▁only ▁after ▁other ▁methods ▁such ▁as ▁di et ▁and ▁exercise ▁have ▁been ▁tried . ▁ ▁Working ▁principle ▁ ▁The ▁infl atable ▁band ▁is ▁placed ▁around ▁the ▁upper ▁part ▁of ▁the ▁st om ach ▁to ▁create ▁a ▁smaller ▁st om ach ▁p ouch . ▁This ▁slow s ▁and ▁limits ▁the ▁amount ▁of ▁food ▁that ▁can ▁be ▁consum ed ▁at ▁one ▁time , ▁thus ▁giving ▁the ▁opportunity ▁for ▁the ▁sense ▁of ▁sat iety ▁to ▁be ▁met ▁with ▁the ▁release ▁of ▁pe pt ide ▁Y Y ▁( P YY ). ▁It ▁does ▁not ▁decrease ▁g astr ic ▁empty ing ▁time . ▁The ▁individual ▁ach ieves ▁sust ained ▁weight ▁loss ▁by ▁choosing ▁health y ▁food ▁options , ▁limit ing ▁food ▁int ake ▁and ▁volume , ▁reducing ▁app et ite , ▁and ▁progress ▁of ▁food ▁from ▁the ▁top ▁portion ▁of ▁the ▁st om ach ▁to ▁the ▁lower ▁portion ▁dig estion . ▁ ▁According ▁to ▁the ▁American ▁Society ▁for ▁Met abol ic ▁B ariat ric ▁S urg ery , ▁b ariat ric ▁surg ery ▁is ▁not ▁an ▁easy ▁option ▁for ▁ob es ity ▁suffer ers . ▁It ▁is ▁a ▁dr astic ▁step , ▁and ▁car ries ▁the ▁usual ▁pain ▁and ▁ris ks ▁of ▁any ▁major ▁g astro int est inal ▁surg ical ▁operation . ▁ ▁However , ▁g astr ic