We will also highlight how current heart failure treatments, including renin-angiotensin-aldosterone system (RAA) inhibitors, β-adrenergic receptor (β-AR) antagonists, sodium-glucose co-transporter 2 (SGLT2) inhibitors, the Dietary Approaches to Stop Hypertension (DASH), and the Mediterranean diet, affect these processes at a molecular level. The gene discussed is SLC5A2; the disease is heart failure.