Personally my husband and I have had on the lower end of blood pressure (as low as 100/50) so we never watched salt intake. We love Himalayan salt.
See the nice little U-shaped curve for sodium excretion in urine vs. hazard ratio.
"A 2011 study in the Journal of the American Medical Association demonstrates a low-salt zone where stroke, heart attack and death are more likely. (3) Compared with moderate sodium excretion, there was an association between low sodium excretion and cardiovascular (CVD) death and hospitalization for coronary heart failure. These findings demonstrate the lowest risk of death for sodium excretion between 4 and 5.99 grams per day. (Figure 1.)
Low salt diets contribute to an increase in hormones and lipids in the blood. A 2012 study in the American Journal of Hypertension found that people on low-salt diets developed higher plasma levels of renin, cholesterol, and triglycerides. "
Gary Taubes has written a bit on the same grounds.