Sodium and health-concordance and controversy.

Competing Interests: Competing interests: We have read and understood BMJ policy on declaration of interests and have the following interests to declare: NRC has received past research funding from the National Institutes of Health and the American Heart Association, and consultancy fees from Jazz Pharmaceuticals and OptumCare. She was a member of the Committee to Review the Dietary Reference Intakes for Sodium and Potassium, National Academies of Sciences, Engineering, and Medicine, 2019. FJH is a member of Consensus Action on Salt and Health (CASH) and World Action on Salt and Health (WASH). Both CASH and WASH are non-profit charitable organisations and FJH does not receive any financial support from CASH or WASH. GAM is chairman of Blood Pressure UK (BPUK), chairman of CASH and chairman of WASH. BPUK, CASH, and WASH are non-profit charitable organisations. GAM does not receive any financial support from any of these organisations. NG has no competing interests to declare.