Salt and the kidneys
Cooking salt (which chemically is sodium chloride) belongs to the list
of nutrients that are essential for the body. It is used, amongst other
things, to maintain the function of the nerves, muscles, glands and
circulation. The kidneys play a key role in the regulation of the salt
content of the body. If the amount is too high, the kidneys intervene
and excessive salt is excreted; on the other hand, if the intake is too
low, the urgently required mineral is held back in the body.
If the kidneys are damaged, such that they can no longer perform
this function efficiently, then the salt content of the body rises.
Because salt exists in the body in its dissolved form, a higher salt
content leads to water retention and thereby to higher blood pressure.
This rise in blood pressure is highly detrimental for the kidneys.
What you should know:
Peoplewho have known kidney damage, as shown by
macroalbuminuria or a high creatine concentration, should
not eat toomuch protein.