Professor Dave Coghill

So there was actually a very good randomised controlled trial taking these food colourings away and they found a positive result.

Unfortunately, New Zealand still has those food colourings in their diet.

So that's something that could affect people.

But managing it is really difficult because you don't always know what your kids are eating.

And you can't say no lollies, no sweets.

You know, that's just not going to be practical for them.

No, sugar's the myth.

Sugar doesn't cause hyperactivity, but food colourings can.

They had a very small effect.

We talked about effect sizes.

The effect size of them was 0.1.

And so it was really, it was significant, but it was really small.

There are probably some people who would get a noticeable improvement with fish oils.

Most wouldn't.

And so if a family, a parent comes to me and said, I'd like to try fish oils, there's no real negative effects.

Then if you want to try it, try it.

Have a go.

Then we looked as well at three other treatments.

One was called neurofeedback.

It didn't help for ADHD.