A case of hot and cold in link between salt and hypertension

A POSSIBLE mechanism for salt-induced hypertension has been identified by US researchers in a study of salt and water loading among 22 healthy volunteers.

Salt intake may raise blood pressure (BP) with the body struggling to maintain both BP and body temperature homeostasis, the researchers said. 

Salt-sensitive individuals maintain core body temperature more effectively than salt-resistant individuals but at the expense of raised BP, they found. The bodies of salt-resistant individuals prioritise BP equilibrium rather than core temperature.

Hypertension Research 2011, in press