“…The domain “beliefs about consequences” (25 studies) [ 27 , 29 – 31 , 33 , 37 , 39 , 42 , 52 , 53 , 55 , 57 , 59 , 65 , 67 , 68 , 73 , 74 , 76 , 78 , 80 , 83 – 86 ] included studies showing how a lack of trust in the effectiveness of the medication and/or the doctor’s advice led to a negation of the treatment, which is an important barrier (9 studies), and was linked to the use of non-therapeutic remedies for glucose control was discussed in 11 studies.…”