Impulazi yaseShayina yenziwa kusuka e-yam entsha yemvelo yaseShayina ngokuhlanza, ukuyomisa, nokuyichoboza kahle. Igcina izakhamzimba zemvelo, amaprotheni e-mucilage, i-dietary fiber, namaminerali amancane, inokunambitheka okuhlanzekile futhi ayinazo izithako ezingezona zemvelo.

Isetshenziswa kabanzi ekudleni okungashintsha ukudla okunomsoco, impuphu yezinhlamvu, iziphuzo eziqinile, ukubhaka, nokudla okunempilo, ukuze kunikezwe umsoco wansuku zonke nokulungiswa kokudla.