ds1 gets bad breath!

[onlygirl]

He brushes his teeth twice per day sometimes more. Our dentist visit was fine nothing wrong there, i dont know what to do. any advice?

Bad breath can sometimes be caused by constipation my mum used to tell me.

I was checking this out before posting and found this. No mention of constipation but some other ideas.

I knew that catarrah can be a cause as well - it leaves a nasty taste in your mouth after all ime.