Can they repeat for vegetarian? As an ethically conflicted meat-eater, I do try to limit my consumption where possible, but full vegan would be tremendously difficult for me to adhere to for any length of time. Eggs are nearly the perfect food.

I would note that eight weeks is not terribly long for a radical dietary change. Presumably, the baseline consumption for participants was more akin to the omnivore diet. What would the study results look like at 4+ months duration? Would vegans creep back up to their original baseline as their body and habits adapted?