Those randomized to eat purely plant-based lost more weight than those just avoiding meat, as well as those eating pesco-vegetarian, semi-vegetarian, or full omnivore. By the end of the six-month study, those randomized to eat a completely plant-based diet lost twice as much weight compared to those who ate any fish or other meat, with 7.5 percent of their body weights lost, compared to about 3 percent.
