The Heart Truth is a campaign meant to raise awareness of the risk of heart disease in women. The campaign is sponsored in the United States by the National Heart, Lung, and Blood Institute, an organization of the United States Department of Health and Human Services; a similar campaign is promoted in Canada by the Heart and Stroke Foundation of Canada. It focuses mainly on educating women aged forty to sixty, as that is the time when the risk of heart disease begins to increase.

The National Heart, Lung, and Blood Institute (NHLBI) is the third largest Institute of the National Institutes of Health, located in Bethesda, Maryland, United States. It is tasked with allocating about $3.6 billion in FY 2020 in tax revenue to advancing the understanding of the following issues: development and progression of disease, diagnosis of disease, treatment of disease, disease prevention, reduction of health care disparities within the American population, and advancing the effectiveness of the US medical system. NHLBI's Director is Gary H. Gibbons (2012–present).