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Britain's top nutritionist warns of too-low sodium

Every Tuesday, Britain's leading nutritionist, Jane Clarke, explains how to eat your way to health. This week she discusses how to treat low sodium levels ....

That's what Tuesday's Daily Mail (London) led off Ms. Clarke's column this week. Clarke responded to a reader suffering hyponatremia:

Sodium is a mineral that is found in common salt. Untreated, hyponatremia can cause confusion, unexplained tiredness and dizziness. The condition is more likely to affect elderly people on diuretics - these drugs, used for treating heart problems and high blood pressure, reduce the excess fluid in the body.

Sometimes this affects the levels of essential body salts - or electrolytes - which our bodies need for performing vital functions.

Unfortunately, the rest of her letter lapses into political correctness, but at least her readers gain a rare glimpse that there is a "right" amount of dietary salt.