The study participants had high BMIs to begin with, and it’s known that there’s “increased risk of multiple myeloma in individuals with poor diet quality.” These folks were in bad shape, nutritionally and metabolically, when the study began. Any improvement to their diet would be . . . an improvement, and they had “coaches” to keep them on track. Just think what their results might have been if they’d switched to a keto / carnivore diet instead of to a vegetarian diet! They were starved for nutriment.
Yeah, I was also thinking that - just going Vegan gets them off some of the worst food items known to humans (such as seed oils and most processed ‘foods’), but it’s still a halfway measure towards really controlling cancer.