A naturally occurring amino acid, homocysteine is created when the vital amino acid methionine—which is derived from food—is metabolized. Hyperhomocysteinemia, or elevated blood levels of homocysteine, has been linked to a higher risk of cardiovascular conditions such as atherosclerosis, coronary artery disease, and stroke. In order to identify cardiovascular risk factors and direct preventive interventions, homocysteine levels must be measured. The addition of “health heart diagnostics” (HHD) to the homocysteine description highlights the importance of this molecule in evaluations of cardiovascular health. Increased homocysteine levels have been linked to inflammation, oxidative stress, and endothelial dysfunction—all important processes in the onset and advancement of cardiovascular disorders. Healthcare professionals can lower cardiovascular risk by recognizing patients with excessive homocysteine levels and implementing lifestyle adjustments,