A study emerging from Britain claims the IQs of kids who grew up to become vegetarians were an average of five points higher. There was no difference measured between full-blown vegetarians and those who ate chicken or fish (does that even count as vegetarianism?).
The study of 8,179 was reported in the British Medical Journal.
Twenty years after the IQ tests were carried out in 1970, 366 of the participants said they were vegetarian - although more than 100 reported eating either fish or chicken.
Men who were vegetarian has an IQ score of 106, compared to non-vegetarians with 101, while female vegetarians averaged 104, compared to 99 for non-vegetarians.
There was no difference in IQ score between strict vegetarians and those who said they were vegetarian but who reported eating fish or chicken.
Researchers said the findings were partly related to better education and higher occupational social class, but it remained statistically significant after adjusting for these factors.