The article explores the relationship between two types of well-being—eudaimonic and hedonic—and their biological correlates. Eudaimonic well-being is associated with personal growth, purpose, and self-actualization, while hedonic well-being relates to happiness and satisfaction. The study found that higher levels of eudaimonic well-being were linked to lower cortisol levels, reduced inflammation, lower cardiovascular risk, and longer REM sleep in older women. In contrast, hedonic well-being showed minimal biological links. The research highlights the importance of eudaimonic well-being in promoting physical health and suggests that psychological well-being may protect against disease. The study also notes that eudaimonic well-being is more closely related to biological markers than hedonic well-being. The findings suggest that fostering eudaimonic well-being could be beneficial for health. However, the study's limitations include a small sample size and cross-sectional design, which restrict the ability to draw definitive conclusions. Future research should explore these relationships in larger, longitudinal studies to better understand the mechanisms linking well-being to health. The study underscores the need for further investigation into how psychological well-being influences biological processes and how these processes contribute to overall health and longevity.The article explores the relationship between two types of well-being—eudaimonic and hedonic—and their biological correlates. Eudaimonic well-being is associated with personal growth, purpose, and self-actualization, while hedonic well-being relates to happiness and satisfaction. The study found that higher levels of eudaimonic well-being were linked to lower cortisol levels, reduced inflammation, lower cardiovascular risk, and longer REM sleep in older women. In contrast, hedonic well-being showed minimal biological links. The research highlights the importance of eudaimonic well-being in promoting physical health and suggests that psychological well-being may protect against disease. The study also notes that eudaimonic well-being is more closely related to biological markers than hedonic well-being. The findings suggest that fostering eudaimonic well-being could be beneficial for health. However, the study's limitations include a small sample size and cross-sectional design, which restrict the ability to draw definitive conclusions. Future research should explore these relationships in larger, longitudinal studies to better understand the mechanisms linking well-being to health. The study underscores the need for further investigation into how psychological well-being influences biological processes and how these processes contribute to overall health and longevity.