How to Get Rid of Canker Sores, According to Science

Do you get canker sores? Do you wish these painful mouth ulcers would go away forever? There is hope! This video explains not only WHY we get canker sores but HOW to prevent them from coming back. Join Michael Aranda for an informative episode of SciShow!
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Sources:

http://citeseerx.ist.psu.edu/viewdoc/...
http://www.merckmanuals.com/professio...
http://www.mayoclinic.org/diseases-co...
https://www.ncbi.nlm.nih.gov/pmc/arti...
http://www.medscape.com/viewarticle/5...
https://www.ncbi.nlm.nih.gov/pmc/arti...
https://cda-adc.ca/jcda/vol-75/issue-...
https://www.ncbi.nlm.nih.gov/pmc/arti...