The question resolves YES if the 6 month follow up to the SMTM potato diet community trial (https://slimemoldtimemold.com/2022/07/12/lose-10-6-pounds-in-four-weeks-with-this-one-weird-trick-discovered-by-local-slime-hive-mind-doctors-grudgingly-respect-them-hope-to-become-friends/) shows people who finished the initial diet and complete the follow-up averaging at least 5lbs below their pre-diet weight.

The average at the end of the 1 month diet for finishers was -10.6lbs so this question is intended to be about whether they re-gain substantial amounts of weight in the intervening 6 months not being part of the diet trial.