Research has shown a strong connection between happiness and heart health. Multiple studies have found that positive emotions and a happy mindset are associated with a lower risk of heart attack, stroke, and death, as well as improved heart rate variability
One meta-analysis of 15 studies, which included nearly 230,000 participants, found that an optimistic mindset was linked to a lower risk of heart attack, stroke, and death . Another study monitored patients suspected to have coronary artery disease and found that those who rated themselves as happiest on the day their hearts were tested had a healthier pattern of heart rate variability .
Positive affect, which includes emotions such as joy, happiness, excitement, and contentment, has been associated with increased survival, improved immune function, and a lower risk of diabetes and hypertension . On the other hand, negative emotions like anger, hostility, and depression have been associated with a higher risk of incident coronary heart disease.
It is important to note that while these studies suggest a strong correlation between happiness and heart health, they do not establish a causal relationship. Further research is needed to understand the mechanisms behind this connection.