RESUMO
This scoping review aims to map the dimensions encompassing the low health literacy (HL) of older adults, describing their respective causes and consequences. A three-step search strategy was conducted using 16 databases from nine portals and reference lists. Of the 4,259 identified studies, 2,845 were screened and 29 (1%) were included. Studies were published between 1999 and 2021, most of them in English (86.2%), from the American continent (48.3%) and with observational design (86.2%). Four dimensions encompassing the low HL of older adults were mapped: (1) patient dimension, (2) healthcare system dimension, (3) social/economic dimension, and (4) health condition dimension. This review highlights specific dimensions encompassing the low literacy in older adults with evidence about its causes and consequences. These results can guide future research and evidence-based practice involving HL of older adults.