Can Acid Reflux Cause Bad Breath?
Acid reflux CAN cause bad breath.
Many studies have refuted the fact that acid reflux, also call gastroesophageal reflux disease or GERD, causes bad breath (halitosis). But, a 2008 study published in the Journal of General Internal Medicine concluded that there is clear evidence that there is a strong association between acid reflux and bad breath.
Struch, Franziska , and Christian Schwahn, PhD. Et al "Self-reported Halitosis and Gastro-esophageal Reflux Disease in the General Population." Journal of General Internal Medicine 23.2 (2008): 260-266. Print.
What Causes Bad Breath?
There are many factors that contribute to the incidence of bad breath including poor oral hygiene, food consumption, and health problems. The most common contributors to halitosis are periodontal diseases and tongue coating. Foods that you ingest are absorbed into your bloodstream, carried to your lungs, and given off in the air you expel. Smoking, dentures, and dry mouth can also lead to halitosis. Several medical conditions have been indicated as increasing the incidence of bad breath including acid reflux, chronic sinus infections, pneumonia, bronchitis, diabetes, and liver and kidney problems.

WebMD"Bad Breath Causes, Treatments, and Prevention"http://www.webmd.com/oral-health/guide/bad-breath
"Can Acid Reflux Cause Bad Breath?." Sophisticated Edge. N.p., n.d. Web. . <http://www.sophisticatededge.com/can-acid-reflux-cause-bad-breath.html>.

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