The heart is the hardest-working organ in the body and the core of the cardiovascular system. A strong, healthy heart constantly circulates blood throughout the body and carries oxygen and nutrients to your organs and tissues. Unfortunately, there are many factors that can undermine heart health. Advancing age or a family history of heart disease, are difficult to control, but other risk factors, including high cholesterol and/or blood pressure or obesity can be managed. Day to day habits such as diet, exercise and supplementation, have the greatest influence on your heart health.