Why is too much salt bad for health?
Salt is an essential ingredient of all foods, particularly
in hot and humid climates where the sweating is profuse. Salt serves
to replenish the minerals lost in sweat.
These days, commercially produced salt is fortiied
with micronutrients (e.g. iodine and iron). Thus, salt also serves
to provide the body with the essential micronutrients.
But, excess of anything is bad! Too much salt can
accelerate hypertension, can precipitate Congestive Heart Failure
in those with a weak heart, can accelerate pulmonary edema, and
is also detrimental for those having kidney failure.