... may lead to patchy myocardial fibrosis, particularly in the atria, interventricular septum, and right ventricle, creating a substrate for atrial and ventricular arrhythmias. Additionally, long-term excessive sustained exercise may be associated with coronary artery calcification, diastolic dysfunction, and large-artery wall stiffening. However, this concept is still hypothetical and there is some inconsistency in the reported findings. Furthermore, lifelong vigorous exercisers generally have low mortality rates and excellent functional capacity. Notwithstanding, the hypothesis that long-term excessive endurance exercise may induce adverse CV remodeling warrants further investigation to identify at-risk individuals and formulate physical fitness regimens for conferring optimal CV health and longevity....

All I can say, both as a doctor and as an endurance athlete, is that this emerging evidence should be taken very seriously by many in the Slowtwitch crowd.

All I can say, both as a doctor and as an endurance athlete, is that this emerging evidence should be taken very seriously by the many in the Slowtwitch crowd who are faster than me at races.

All I can say, both as a doctor and as an endurance athlete, is that this emerging evidence should be taken very seriously by many in the Slowtwitch crowd.

Are you a dentist?