Is it normal to lose my sense of smell as I age?

On call

Q. I am 72, and over the past year I have begun to lose my sense of smell. Is this a normal part of aging?

A. Some loss of sensitivity to smells — also known as anosmia — is normal as we get older, but there may be another explanation. The ability to smell depends on a healthy lining of the nasal cavity, open nasal passageways, and normal function of the olfactory (smell) nerves. A problem with one or more of these can lead to loss of smell. The most common causes are nasal problems, like nasal polyps, blocked sinuses, and seasonal allergies. These can be detected by a routine examination, although you may need to see an ear, nose, and throat specialist for a more extensive exam.

Another possibility is a problem with part of the nervous system responsible for smell. Some studies have suggested that loss of smell could be an early sign of a neurodegenerative disease, such as Alzheimer's or Parkinson's disease. However, a recent study of 1,430 people (average age about 80) showed that 76% of people with anosmia had normal cognitive function at the study's end.

If you notice a major change in your sensation of smell, be sure to mention it to your doctor at your next visit.

— by William Kormos, M.D.
Editor in Chief, Harvard Men's Health Watch

Disclaimer:
As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review on all articles. No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.