Table 1. Abbreviated search strategy for identifying relevant sources on how food insecurity impacts mental health among older adults residing in LMICs.

Domain	Search Terms
Food Insecurity	"food insecurit*" OR hunger OR "food securit*" OR "food ration*" OR "Famine" OR "Food Deserts" OR "food scarcity" OR "dietary insufficiency" OR "hunger" OR "Food Insecurity" OR "Food Security" OR "Food Supply" OR "Nutritional Status" OR "Malnutrition" OR "Poverty" OR "nutritional risk" OR "food availability" OR "food utilization" OR "food access"
Older Adults	"older adult*" OR "aged" OR "middle aged*" OR "aged over fifty" OR "aged over 50" OR "senior*" OR "retire*" OR "older people" OR "older men" OR "older women" OR "retired" OR "geriatric" OR "50 years and older" OR "gerontology" OR "ageing" OR "frail*" OR "ageing" OR "aging" OR "elder"
Mental Health	"Psychological disorders" OR "mental wellbeing" OR "stress" OR "anxiety" OR "social problems" OR "attention deficits" OR "MH" OR "Mental Illness" OR "Mental Disease" OR "Mental Disorder" OR "Depress*" OR "Anxiety Disorders" OR "Post-Traumatic Stress Disorder" OR "Stress Disorders, Post-Traumatic" OR "Bipolar Disorder" OR "depressive symptoms" OR "mental status" OR "quality of life" OR "mental health" OR "mental wellness"
LMICs	"lower income countr*" OR "developing countr*" OR "lower-middle countr*" OR "third world countr*" OR "middle income countr*"