Daily Bulletin

The Conversation

  • Written by David King, Senior Lecturer, The University of Queensland

This is an article from Curious Kids, a series for children. The Conversation is asking kids to send in questions they’d like an expert to answer. All questions are welcome – serious, weird or wacky!

Hello. My name is Mannix and I am 10 years old. I want to know if it is better for your brain and body to breathe out of our nose than your mouth? I worry about this as I saw on YouTube that your IQ was less if you breathed through your mouth but how can I do this if I have a cold? My mum says I should not worry. – Mannix, aged 10, Sydney

Hi Mannix. Your mum is right; you shouldn’t worry. The way you breathe has no effect on your IQ.

However, breathing in through your nose has a number of benefits.

Firstly, it helps to warm and add moisture to dry air to make it less irritating to our lungs and trachea, which is the scientific word for your windpipe.

Read more: Curious Kids: Are zombies real?

The nose has a number of bony ridges, called turbinates, which increase its surface area and scatter the air flow.

image The nose has special features that help filter out dust and dirt. Flickr/Shelby H., CC BY

Unfortunately, the downside is when the skin over these ridges swells from colds or allergies they narrow the air passage and makes breathing through your mouth easier than via your nose.

Secondly, the microscopic hairs in your nose help to trap dust and other foreign particles, removing most of them before they get sucked into your lungs.

Fortunately, most of us live in relatively climate-controlled environments with fairly good air quality. This means we can do fine without the additional benefits that nose breathing provides over mouth breathing.

That’s a great question, though. It can be hard to find good information on the internet about health. There are many ways information on the internet can confuse us. It’s important to be careful about not trusting everything we read.

There is something called bias, which might cause us to believe something that’s not completely true. “Confirmation bias”, for instance, happens when you already have an opinion about something and then look for ways to confirm your opinion and ignore all the other information that suggests your opinion might be wrong.

Read more: Evidence-based medicine

The practise of using good information for health is called “evidence-based medicine”. This might be something you want to look up on the internet.

image Noses are good for smelling as well as breathing. Flickr/Derek Hatfield, CC BY

Some good sites for health information include this website by The Royal Children’s Hospital which has a bunch of stories about different health conditions. The KidsHealth website also has some awesome videos about how the body works. The CSIRO is an Australian science institute who discovered a heap of great stuff like wi-fi. They have some videos on science and health you can find here.

Your curiosity in science and health is great. Keep asking questions, and good luck with your future endeavours!

Hello, curious kids! Have you got a question you’d like an expert to answer? Ask an adult to send your question to us. They can:

* Email your question to curiouskids@theconversation.edu.au * Tell us on Twitter by tagging @ConversationEDU with the hashtag #curiouskids, or * Tell us on Facebook

image CC BY-ND Please tell us your name, age, and which city you live in. You can send an audio recording of your question too, if you want. Send as many questions as you like! We won’t be able to answer every question but we will do our best.

Authors: David King, Senior Lecturer, The University of Queensland

Read more http://theconversation.com/curious-kids-i-heard-that-breathing-through-your-mouth-makes-your-iq-go-down-is-that-true-81904

Writers Wanted

The big barriers to global vaccination: patent rights, national self-interest and the wealth gap


After riots, Donald Trump leaves office with under 40% approval


Five ways Australians can save the planet without lifting a finger (well, almost!)


The Conversation


Ray Hadley's interview with Scott Morrison

RAY HADLEY: Prime Minister, good morning.    PRIME MINISTER: G’day Ray.   HADLEY: I was just referring to this story from the Courier Mail, which you’ve probably caught up with today about t...

Ray Hadley & Scott Morrison - avatar Ray Hadley & Scott Morrison

Prime Minister's Remarks to Joint Party Room

PRIME MINISTER: Well, it is great to be back in the party room, the joint party room. It’s great to have everybody back here. It’s great to officially welcome Garth who joins us. Welcome, Garth...

Scott Morrison - avatar Scott Morrison

Prime Minister Interview with Ben Fordham, 2GB

BEN FORDHAM: Scott Morrison, good morning to you.    PRIME MINISTER: Good morning, Ben. How are you?    FORDHAM: Good. How many days have you got to go?   PRIME MINISTER: I've got another we...

Scott Morrison - avatar Scott Morrison

Business News

7 foolproof tips for bidding successfully at a property auction

Auctions can be beneficial for prospective buyers, as they are transparent and fair. If you reach the limit you are willing to pay, you can simply walk away. Another benefit of an auction is tha...

Dominique Grubisa - avatar Dominique Grubisa

Getting Ready to Code? These Popular and Easy Programming Languages Can Get You Started

According to HOLP (History Encyclopedia of Programing Languages), there are more than 8,000 programming languages, some dating as far back as the 18th century. Although there might be as many pr...

News Co - avatar News Co

Avoid These Mistakes When Changing up Your Executive Career

Switching up industries is a valid move at any stage in your career, even if you’re an executive. Doing so at this stage can be a lot more intimidating, however, and it can be quite difficult know...

News Co - avatar News Co

News Co Media Group

Content & Technology Connecting Global Audiences

More Information - Less Opinion