[Zippy]

well criminality is about man made rules so not sure the word should be used when talking about genetics.

A lot of bad behaviour(which is what we're really talking about) is about attention seeking or lack of self esteem. Plus no moral conscience. These are issues that can be addressed through good parenting. But then again you do see families that have one very badly behaved child and the other children are the opposite. So I guess there must be something about that childs genetics that make him different as they all, I would assume, had the same upbringing and influences.

If a simple supplement like Omega 3 can make somebody a better person then go for it.