Abstract: This article presents the results of research on the impact of diet on the level of life satisfaction. The results show that people following a plant-based diet exhibit a higher level of life satisfaction than meat-eaters. The findings indicate a positive impact of a healthy and balanced plant-based diet on mental health. Material and methods: The study was conducted on 332 individuals using the Life Satisfaction Questionnaire by Jochen Fahrenberg, adapted by Jan Chodkiewicz. The research sample was collected randomly using the snowball method. Results: Analysis of participant responses confirms the hypothesis that people following a plant-based diet achieve statistically significant higher overall life satisfaction scores than omnivores, and higher scores in certain factors when compared to them. Conclusions: Diet is crucial for life satisfaction and affects behaviors, emotions, and self-perception. This should motivate us to make conscious dietary choices and modify those harmful to our health.
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