Does caffeine affect the cardiovascular system at a histological level?
Yes, caffeine can have significant histological effects on the cardiovascular system. It can induce vasodilation, which is the widening of blood vessels, thereby improving blood flow. However, excessive caffeine intake may lead to increased heart rate and blood pressure. Histologically, this can result in hypertrophy of cardiac muscle cells, which is the enlargement of these cells due to increased workload.