Two large, randomized controlled trials show that replacing regular salt with potassium-enriched salt substitute (~75% NaCl, 25% KCl) reduces cardiovascular events and probably all-cause mortality.

Salt substitution and salt-supply restriction for lowering blood pressure in elderly care facilities: a cluster-randomized trial - Nature Medicine

In a cluster-randomized trial performed in 48 residential elderly care facilities in China, use of a low-sodium salt substitute instead of regular salt decreased blood pressure and cardiovascular even...