"There are very important and practical issues raised by following this alternative route which says,..." — Marvin Harris

Yes, a general principle that comes out of research behind Good to Eat is that there are no world religions that have acted to decrease the potential for the nutritional well-being of their followers.

Pigs eat grass if they are very hungry, but they can't use it as a regular source of food.

Now we are in a situation in which for a significant part of the industrial world too much could become a danger, especially too much of the things which are really not good for us in such large quantities.

If I can bring some light to bear on problems like that, I feel that people will be enlightened not only on the question but also on a way of approaching such questions.