A vegetarian diet based on the AHA (American Heart Association) guidelines of 5 to 6 servings of whole grains and 5 or more servings of vegetables and fruit would, in fact, supply all of the amino acids necessary for health.

The following is extracted from 

http://m.circ.ahajournals.org/content/105/25/e197.full.pdf

and

http://m.circ.ahajournals.org/content/105/25/e197.full

American Heart Association Circulation. 2002; 105: e197 doi: 10.1161/​01.CIR.0000018905.97677.1F

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We ( Barbara V. Howard, PhD, MedStar Research Institute, 108 Irving St NW, Washington, DC 20010, Barbara.v.howard@medstar.net) certainly agree with Dr McDougall (Dr. John McDougall, MD, The McDougall Program, Santa Rosa, CA 95404, drmcdougall@drmcdougall.co) that:

A vegetarian diet based on the AHA (American Heart Association) guidelines of 5 to 6 servings of whole grains and 5 or more servings of vegetables and fruit would, in fact, supply all of the amino acids necessary for health.

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