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Sodium is being described as essential, and it is said that too much is not healthy. There is talk about reducing sodium "but not elimination". This latter point is important for without sodium (sodium chloride) we die. We are electrical creatures, and electricity is produced at cell level when water, potassium and sodium are all present in appropriate amounts. Apparently a molecule of water entering a cell under the influence of sodium in the extracellular fluid and potassium in the intracellular water generates a tiny amount of electricity. Without a suitable balance of all three you have no electricity. Excessive sodium is thought to increase high blood pressure in some circumstances and so doctors may recommend that persons with high pressure to reduce their salt intake. However the evidence against sodium is questionable and my doctor was emphatic that the advice does not apply to people without high blood pressure (when I questioned him about this matter). Has anyone got any evidence? Low sodium inta