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From: Keith (d207-216-60-167.bchsia.telus.net -207.216.60.167)
Subject: Re: Complete protein?
Date: September 12, 2006 at 8:03 am PST

In Reply to: Complete protein? posted by Sharon on September 11, 2006 at 8:10 pm:

So-called "complete" proteins are proteins that contain all the eight amino acids that humans are not able to synthesize in their bodies and therefore must get from dietary sources. It used to be thought that in order to get all the eight essential amino acids from vegetarian sources, you had to combine several specific food sources in one meal. That was called "protein combining" and is now known to be unnecessary.

Note that even if the protein combining theory was still believed, your doctor would be wrong in saying you need meat, because you could get all the essential amino acids by doing the combining.

As it is, we now know that plant sources are not nearly as incomplete as was once believed. Soybeans, for example, contain all the essential amino acids in sufficient proportions to be considered complete in themselves. Many other plant sources also have all the essential amino acids in various proportions. To provide proper protein nutrition, all you need to do is to eat regularly from the four vegan food groups (grains, legumes, fruits and vegetables).

Meat is definitely not the only source of vitamin B12. In fact, although meat contains B12, it is not a "source" at all. All vitamin B12 comes from bacteria. Animals (including humans) store bacterial B12 that they get in their diet in their muscle tissues. The reason that meat contains B12 is because cows eat grass that they have cr@pped on!

Your doctor needs to get more nutrition education than the 6 hours he got in med school.

Keith



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