▁procedure ▁to ▁remove ▁the ▁band , ▁after ▁which ▁the ▁st om ach ▁usually ▁returns ▁to ▁its ▁normal ▁pre - band ed ▁size ▁so ▁it ▁is ▁not ▁unusual ▁for ▁a ▁person ▁to ▁gain ▁weight ▁after ▁having ▁a ▁band ▁removed . ▁However , ▁it ▁is ▁not ▁entirely ▁revers ible ▁as ▁ad hes ions ▁and ▁t issue ▁sc arring ▁are ▁in ev itable . ▁Un like ▁those ▁who ▁have ▁procedures ▁such ▁as ▁R N Y , ▁D S , ▁or ▁B PD , ▁it ▁is ▁unusual ▁for ▁g astr ic ▁band ▁patients ▁to ▁experience ▁any ▁nut r itional ▁def ic ien cies ▁or ▁mal abs or ption ▁of ▁micro - nut ri ents . ▁Cal ci um ▁supp lement s ▁and ▁Vit amin ▁B 1 2 ▁in jections ▁are ▁not ▁rout in ely ▁required ▁following ▁g astr ic ▁band ing ▁( as ▁is ▁often ▁the ▁case ▁with ▁R N Y , ▁for ▁example ). ▁G astr ic ▁dump ing ▁synd rome ▁issues ▁also ▁do ▁not ▁occur ▁since ▁int est ines ▁are ▁not ▁removed ▁or ▁re - rout ed . ▁ ▁Typ ically , ▁patients ▁who ▁under go ▁adjust able ▁g astr ic ▁band ing ▁procedures ▁lose ▁less ▁weight ▁over ▁the ▁first ▁ 3 . 5 ▁years ▁than ▁those ▁who ▁have ▁R N Y ▁g astr ic ▁by pass , ▁B PD , ▁or ▁D S ▁sur ger ies . ▁Although ▁other ▁procedures ▁appear ▁to ▁result ▁in ▁greater ▁weight ▁loss ▁than ▁adjust able ▁g astr ic ▁band ing ▁in ▁the ▁short ▁term , ▁results ▁from ▁the ▁study