I have heard this aswell, but I'm not sure what to make of it. For us not to get better as vegetarians would have to mean there is something in meat and dairy that we can't get from vegetables and fruits. Also herbs etc can be used to remove the mercury from our organs and then algin to bind to it, so I'm not sure where meat and dairy come in.

The only thing that is in animal products that isn't in plants is B12 (as far as I am aware) and that some say animal protein is better at helping the body detox than plant protein.

My dentist who deals with toxicity said that eating eggs helps detox, and these are acceptable for vegetarians.

It is my desire in life to be vegan, but at the moment I am staying on dairy products simply because combining various diets on a limited budget has been too difficult for me (vegan, detox and low carb).