Wahl, Deborah R., Karoline Villinger, Laura M. König, Katrin Ziesemer, Harald T. Schupp & Britta Renner
Scientific Reportsvolume 7, Article number: 17069 (2017)

Could eating healthier foods make you happier? For this study, researchers separated food into categories and sent experience sampling assessments four times a day to measure levels of happiness. Based on the food that was eaten, results showed that healthier food showed generally positive responses, proving the hypothesis to be correct.