Chronic stress, particularly from socioeconomic factors, significantly contributes to heart disease, independent of lifestyle choices. The impact of stress can be observed even in animal hierarchies, where lower-ranking mice develop heart issues despite similar diets and exercise. Additionally, while COVID can lead to heart complications, vaccines generally present a favorable risk-benefit ratio, especially when compared to the disease itself. The concept of a "broken heart" is also explored, highlighting its real physiological implications.
