Fiber ea lijo ke mofuta oa lijo tse ke keng tsa rojoa ke li-enzyme tsa 'mele oa motho, tse ke keng tsa kenngoa ke' mele oa lintho tsa polysaccharide le lignin ka kakaretso.
Le hoja e na le phapang e totobetseng le liprotheine, mafura, livithamine le limatlafatsi tse ling, e bohlokoa haholo ho bophelo bo botle ba batho, ho fihlela lilemong tsa bo-1970, fiber ea lijo e ile ea kenngoa ka molao sechabeng sa phepo e nepahetseng, e khetholloang e le "matlafatsi a bosupa", 'me joale maraka a bont?a mokhoa o motle oa ho hōla.