The Renin-Angiotensin-Aldosterone System (RAAS) is a complex hormonal pathway that plays an important role in regulating the body's blood pressure, fluid balance, and electrolyte levels. It is named after three key things involved in its regulation - renin, angiotensin, and aldosterone.⁣ ⁣ Renin is an enzyme produced by the kidneys in response when there is a decrease in blood flow or a drop in blood pressure, renin is released, kickstarting the RAAS pathway. Renin then acts on angiotensinogen,