ta wrote:
>>>>I think it is because a vegetarian diet is probably going to be low
>>>>on sulphur and zinc
>>>>
>>>
>>>Could you be a little more specific? Thanks.
>>
>>sulphur chelates mercury, and the body needs zinc to produce
>>metal-binding proteins.
>
> Thanks for clarifying. That's true, sulphur chelates mercury, but so does
> DMSA and vitamin C. Why wouldn't these chelating agents be sufficient? As to
> zinc, why wouldn't vegetarian sources of zinc suffice?

Because vegetarian sources of zinc are high in phytates. Phytates bind and tie
up zinc and nonheme iron, preventing absorption and assimilation of both. Just
adding a little bit of meat to the diet increases absorption of both those minerals.

The following study found that just eating 50 or 75 grams (about an eighth of a
pound) of pork increased nonheme absorption by 44% to 57% (respectively on 50g
and 75g trials).
http://tinyurl.com/x8b2