I'm basking in glory here as I was a vegetarian at 30:
A new study shows that children with higher IQs are more likely to become vegetarians. Researchers from South Hampton University analyzed data on 8,170 participants from the 1970 British Cohort Study and concluded that a higher IQ at age 10 was associated with a 38 percent increased chance of being vegetarian at age 30. The study included 366 vegetarians, which was 4.5 percent of the total sample.
Gale CR, Deary IJ, Schoon I, Batty GD. IQ in childhood and vegetarianism in adulthood: 1970 British cohort study. BMJ [serial online]. Dec. 15, 2006. Available at: http://bmj.bmjjournals.com/ Accessed Dec. 15, 2006.