Financial satisfaction, food security, and shared meals are foundations of happiness among older persons in Thailand

The objective of this study was to investigate the association between happiness and food-related behaviours and other potential factors among older persons in Thailand. This was a cross-sectional study with multistage random sampling. In total, 1,197 older (age 60 + years) persons participated in this study. Face-to-face interviews were conducted to obtain information about socio-demographic characteristics, health status, household chores, home gardening, financial situation, family meals, and food security. Descriptive and multivariate regression analyses were performed for data analysis. The analysis found that age, health status, household chores, and home gardening were found to be significantly associated with happiness. Statistically-significant associations of financial situation, family meals, and food insecurity with happiness were also observed. People who were not dissatisfied with their financial situation were happier than people who were unhappy with their financial situation. Older people who ate every meal with a family member(s) were happiest. People who had severe food insecurity were less happy than those with food security. The findings suggest the need for investment priorities on food and nutrition with a long-term policy to ensure financial self-sufficiency and food security among older persons and their family. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12877-023-04411-1.