What's the Link Between Eating Disorders and Vegetarianism?

In the article: "What's the Link Between Eating Disorders and Vegetarianism?" the author describes the possible links between eating disorders and vegetarianism during, before, or after an eating disorder. 

The author explains the average age of eating disorders starting at age sixteen, and the average age of vegetarianism starting at age seventeen. The author furthermore explains reasons why someone with an eating disorder might become a vegetarian. Some examples are the excuse of rapid weight loss and becoming a "vegetable junkie". She then mentioned how vegetarianism can help overcome eating disorders.

Do you think there is a possibility of eating disorders and vegetarianism being linked together?

Are vegetarians smarter than carnivores?

In the article that I read on Psychology Today hypothesized that vegetarians have a higher childhood IQ than that of meat eaters. 

A study that took place in the United Kingdom showed that people that were vegetarians by the age of 42 had a significantly higher childhood IQ than those that were meat eaters by the age of 42. Eleven different cognitive tests took place at three different before the subject turned 16. 

Vegetarians had a mean childhood IQ of 109.1, whereas meat eaters had a mean childhood IQ of 100.9. In the United States, vegetarians had a mean childhood IQ of 101.5, whereas meat eaters had a mean childhood IQ of 98.5. Even though the difference wasn't as great in the United States compared to the United Kingdom, there was still a difference between the IQ's of vegetarians and that of meat eaters.

Do you think that vegetarianism can contribute to a higher IQ?