Hypertension is one of the many risk factors associated with cardiovascular disease, the most significant cause of human mortality in the world. In an Australian study with 5,741 patients, researchers found that interactions with pets lowered systolic blood pressures significantly . In a later study, researchers found that pet ownership reduced blood pressure better than ACE inhibitors, a type of blood pressure medication . These two studies show how pets not only offer us companionship and unconditional love, but they make us healthier, too!
 Anderson, W.P.; Reid, C.M.; Jennings, G.L. Pet ownership and risk factors for cardiovascular disease. Med. J. Aust. 1992, 157, 298–301.
 Allen, K.; Shykoff, B.E.; Izzo, J.L. Pet ownership, but not ACE inhibitor therapy, blunts home blood pressure responses to mental stress. Hypertension 2001, 38, 815–820