Everyone smart enough will tell you that Correlation does mean causation. I think though that diet can indeed increase IQ, there is a special fat found in fish that's very good at this, and you can find this fat in Flax seeds, in bigger portions.
Vegetarians are merely more likely to get flax seeds for important protein and healthy fats. The good news about this is that you can just get flax seeds in your diet without going to extremes such as sacrificing meat, fish and eggs from it and still get the IQ benefits.
... OR you could just do excersises to increase your IQ it might even be more effective than just changing your diet.
Not like IQ has any correlation with success anyway
