After seeing this proposal a month ago, I contacted the authors of the large SSaSS randomized trial [1] (n ~ 21,000) which compared a potassium salt substitute

After seeing this proposal a month ago, I contacted the authors of the large SSaSS randomized trial [1] (n ~ 21,000) which compared a potassium salt substitute (75% sodium, 25% potassium) to normal salt. There was no reduction in BMI in the potassium group. Now the amount of potassium consumed was not directly measured, but assumed to be 20g salt substitute per day which equates to 5g KCL or about 2.5g potassium. This was enough to have other biological effects like reducing stroke risk, and was more than most people took in the slimemold study. [1] https://www.nejm.org/doi/full/10.1056/nejmoa2105675 https://www.nejm.org/doi/full/10.1056/nejmoa2105675