▁not ▁need ▁a ▁fill ▁at ▁all ▁and ▁have ▁sufficient ▁restriction ▁immediately ▁following ▁surg ery . ▁O thers ▁may ▁need ▁significant ▁adjust ments ▁to ▁the ▁maximum ▁the ▁band ▁is ▁able ▁to ▁hold . ▁ ▁Post - s urg ical ▁di et ▁and ▁care ▁The ▁patient ▁may ▁be ▁pres cribed ▁a ▁liquid - only ▁di et , ▁followed ▁by ▁m ush y ▁food s ▁and ▁then ▁sol ids . ▁This ▁is ▁pres cribed ▁for ▁a ▁varied ▁length ▁of ▁time ▁and ▁each ▁sur geon ▁and ▁manufact urer ▁var ies . ▁Some ▁may ▁find ▁that ▁before ▁their ▁first ▁fill , ▁they ▁are ▁still ▁able ▁to ▁eat ▁fairly ▁large ▁port ions . ▁This ▁is ▁not ▁surprising ▁since ▁before ▁the ▁fill ▁there ▁is ▁little ▁or ▁no ▁restriction ▁in ▁the ▁band . ▁This ▁is ▁why ▁a ▁proper ▁post - op ▁di et ▁and ▁a ▁good ▁after - care ▁plan ▁are ▁essential ▁to ▁success . ▁A ▁recent ▁study ▁found ▁that ▁patients ▁who ▁did ▁not ▁change ▁their ▁e ating ▁hab its ▁were ▁ 2 . 2 ▁times ▁more ▁likely ▁to ▁be ▁un success ful ▁than ▁those ▁who ▁did , ▁and ▁that ▁patients ▁who ▁had ▁not ▁increased ▁their ▁physical ▁activity ▁were ▁ 2 . 3 ▁times ▁more ▁likely ▁to ▁be ▁un success ful ▁than ▁those ▁who ▁did . ▁ ▁A ▁long - term , ▁post - g astr ic - band ▁surg ery ▁di et ▁should ▁consist ▁of ▁normal ▁health y ▁food ▁that ▁is ▁solid ▁in ▁nature ▁and ▁requires ▁am ple ▁che wing ▁to ▁achieve ▁a ▁paste ▁consist ency ▁prior ▁to ▁sw allow