It is one of the great oddities of nutrition that public health guidelines invariably recommend salt reduction but the science is so hard to do that the value of doing so can’t be proven unequivocally. Hypertension specialists insist that salt reduction is essential for controlling high blood pressure, and many people with high blood pressure can demonstrate that this is true. So why can’t the science show it? I’d say because even the lowest salt intakes are higher than recommended. B