“…Information regarding the factors that may influence WG consumption (barriers and facilitators) was collected from studies addressing the consumer’s perception of products made with WG. The literature search allowed us to identify 13 studies in children [ 16 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 ], five in adolescents [ 33 , 43 , 44 , 45 , 46 ], and 30 studies in adults; more precisely for adults: 10 in young adults [ 44 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 ], 10 in middle-aged adults [ 16 , 31 , 37 , 55 , 56 , 57 , 58 , 59 , 60 , 61 ], four in older adults [ 17 , 62 , 63 , 64 ], two in young and middle-aged adults grouped together [ 65 , 66 ], and five that did not separate age groups and considered all adults together [ 15 , 67 , 68 , 69 , 70 ]. The data that were...…”