This is a protocol for a Cochrane Review (Intervention). The objectives are as follows:

The objective of this review is to evaluate the effects of salt reduction on the prevention and progression of nephropathy in diabetes mellitus. It is unlikely that there are studies of sufficient duration to examine the effect on outcome measurements such as end stage renal failure or death. Therefore studies evaluating the effect of dietary salt modification on surrogate markers of diabetic nephropathy will be included.