Smelling disorders, such as phantosmia, can occur for a variety of reasons colds and flu sinus infections nasal polyps head injury some conditions that affect the nervous system, such as Alzheimers disease and Parkinsons disease older age smoking hormonal changes dental problems exposure to certain chemicals radiations treatment for head and neck cancers certain medications, such as antibiotics and antihistamines Some digestive conditions, such as acid reflux, can cause bad breath and a bad taste in the mouth
As the map above shows, the numbers for Canada's North are significantly higher
In addition, NHIS collects information on the use of cigarettes and cigars only once at survey enrollment for each participant, and information on alcohol use and preexisting chronic conditions (e.g., diabetes, high blood pressure, high cholesterol), which are risk factors for premature death, was not available consistently after 1997 in NHIS
Archived from the original on 14 August 2015
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