This study that Taubes references says that certain groups of vegetarians often identified as being healthier are frequent nut eaters:<p><a href="http://www.ncbi.nlm.nih.gov/pubmed/10479222" rel="nofollow">http://www.ncbi.nlm.nih.gov/pubmed/10479222</a><p>Interestingly if I recall correctly he mentions that 7th day adventists (vegetarians) have roughly the same heart disease level as Mormons (meat eaters).