Doctor Merritt points out that the most relied upon clinical study on salt’s effect on hypertension was completely flawed for two reasons.
1. The investigators only reported data that agreed with their hypothesis. If any subject had an increase in blood pressure from lowering their salt intake, it was assumed that they were not following the diet and their data was discarded and not included in the analysis.
2. There was more than one variable in the study which might affect hypertension. The subjects’ diet was low salt, low fat and low calorie. Since low fat and low calorie diets tend to reduce blood pressure, how can you say that the low salt was reducing hypertension? Yet the researchers did say that.