On the other hand, salt starvation has consequences, especially in a hot climate where diarrheal diseases are common. The salt tax was ended as soon as India became independent.

Illness is a major cause of salt depletion (Black 1953, 305-11). People who are already low on salt are particularly vulnerable. Large quantities of salt can be lost in fever-sweat, in vomit, and most of all in diarrhoea (Marriott 1950, 32-4). This should be continually replenished. Severe diarrhoeas can drain as much as 1 ¾ ounces of salt from the body in a single day, and thus quickly lead to severe dehydration. Without intravenous infusion of saline solution – not an option in the period being considered – recovery would have been unlikely (Souhami and Moxham 1990, 849). However, milder diarrhoeas, which as any traveller can relate are common in India, can over a few days also lead to severe depletion (Marriott 1950, 33). Rehydration can only be effected with the intake of salt. Without this salt, however much water is drunk, recovery is impossible. Many diarrhoeas are self limiting – that is they terminate of their own accord, without drugs, after a few days. Rotavirus diarrhoea, which “is the commonest cause of diarrhoea in children up to 2 years old in the tropics” (Souhami and Moxham, 257), is an important example. It is essential to keep the body from dehydrating, and salt is necessary for this. The main ingredient of modern oral rehydration solutions is salt (257).

Mild salt depletion, resulting from insufficient salt in the diet, produces “extreme lassitude” (Marriott 1950, 40). This will, of course, reduce economic output. For people already on the edge of starvation, insufficient salt will set up a cycle of economic decline.