More kids are reportedly feeling nervous about going to the toilet in public, and one expert is looking to explain why this is.

A study out of Australia says the fear of using the toilet is getting more widespread, with more kids holding it in during school hours, which impacts their learning. 

Psychologist Sara Chatwin says it's important to make sure kids feel comfortable doing what they need to do at school.

"If we are, no pun intended, messing things up at this point, it can lead to a lot of physical and psychological problems further down the track."

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