Right now this is just based on probabilities. There needs to be more investigation to say for sure I think. For example slow COMT people are more likely to be

Right now this is just based on probabilities. There needs to be more investigation to say for sure I think. For example slow COMT people are more likely to be depressed or have some other mental symptoms. And that's because the COMT gene is responsible for producing an enzyme actually breaks down specific hormones so that some thoughts don't linger. We need to do that work next - what is the probable mechanism - before we should say - this gene causes this.