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To the Editor:
—Thank you for the letter from Dr. Salomon. I should prefer to let more facts and time demonstrate whether or not the proposed hypothesis is valid. If it is wrong, no arguments would change that fact.Relative to Point a in Dr. Salomon's letter, I have no data on the salt intake of the South American tribes he names but would be interested to have some precise information on this subject. Unless they have some process for adding salt to their native foods, however, I suspect that their actual average intake is not very high, compared with civilized societies. This is true at least for the primitives on whom I have data. Natural foods are either animal flesh or plants, and their derivatives. By and large, the flesh that is eaten is muscle, and muscle is a high potassium (not sodium) food. Furthermore, animals apparently differ very
Dahl LK. EVIDENCE FOR RELATIONSHIP BETWEEN SODIUM (CHLORIDE) INTAKE AND HUMAN ESSENTIAL HYPERTENSION. AMA Arch Intern Med. 1955;95(1):173-174. doi:10.1001/archinte.1955.00250070189023