Blood vessels contain blood. That may seem completely obvious to you now, but 3,000 years ago, people thought vessels carried air and maybe even urine.
Everything we know today is the sum of ideas that came before us. There’s a saying that goes, “If we achieve greatness, it is because we stand on the shoulders of giants.” The “giants” of heart medicine were doctors and scientists who worked over the past 10,000 years to unlock this organ’s mysteries. Some of their ideas were silly or wrong, but their discoveries made modern medicine possible.
