Lack of Scent With Age: Causes, Signs and Prevention


Modifications to your sense of odor are widespread as you age.

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Oftentimes, simply the considered a nice aroma (suppose: freshly reduce grass, your morning cup of espresso or just-baked apple pie) can trick your mind into conjuring up its scent.

However as you age, your once-keen sense of odor might take, effectively, a nosedive.

It is true: As you get older — particularly when you attain the age of 70 — your sense of odor can weaken, in accordance with the Nationwide Library of Medication (NLM).

In truth, “half of individuals over 65 have some decreased sense of odor,” says Philip Chen, MD, FARS, an affiliate professor of otolaryngology and rhinology on the College of Texas Well being Science Heart at San Antonio.

Relying on the trigger, this decline in odor notion — often known as “hyposmia” when it is a partial loss and “anosmia” when it is a full loss — could also be momentary or everlasting, per the Mayo Clinic.

Right here, uncover what causes older adults to lose their sense of odor, and be taught what you are able to do to regain your sniffing skill.

Why Sense of Scent Is Vital

Most of us take our sense of odor without any consideration, however the capability to understand completely different scents is necessary for thus many points of life and well being.

For one, odor notion is intimately linked to your sense of style. In case your sense of odor diminishes, meals might start to style bland and develop into much less pleasant, in accordance with the Nationwide Institute on Ageing (NIA).

And if this occurs, it could deter you from consuming, which might probably trigger malnutrition, unhealthy weight reduction and even despair, per the Mayo Clinic.

Not solely can a weakened sense of odor have an effect on your general well being and high quality of life, however it may even put you in peril. With no eager sense of odor, you will not have the ability to detect probably dangerous odors like smoke, gasoline leaks, spoiled meals and different hazardous chemical compounds, in accordance with the NIA.


When you expertise any hassle with sense of odor, you would possibly miss sure indicators of hazard. To keep away from probably unsafe conditions, remember to have working smoke and carbon monoxide detectors in your house and all the time verify the expiration date on meals, Dr. Chen says.

Why You Could Lose Your Sense of Scent as You Age

Whereas there are a lot of doable causes for a lack of odor, Dr. Chen says the causes usually fall into two broad classes (whether or not you are an older grownup or not):

  • Conductive:‌ the place odor particles cannot stand up to the olfactory space on the high of the nostril (suppose: extreme nasal blockages like a foul chilly or an infection, nasal polyps and even tumors)
  • Sensorineural:‌ the place the olfactory nerves aren’t working appropriately and the odor fibers aren’t choosing up or processing the sign correctly (suppose: neurodegenerative problems, medicines and sure viruses, just like the one which causes COVID-19)

To interrupt that down additional, listed here are the widespread causes behind dropping your sense of odor:

1. You are Shedding Nerve Endings

“With age, we expertise a lack of olfactory nerve fibers,” i.e., the nerves in your nostril, Dr. Chen says.

Nobody actually is aware of why this occurs, however “some consider that the neuroepithelium (the place olfactory sensory fibers are positioned) degenerates with age, very like different nerves within the physique,” he says. “This degeneration results in a decreased variety of olfactory sensory nerves and causes the olfactory bulb to atrophy.”

And with fewer nerves on this nasal space, “we do not understand odor as effectively or as strongly,” Dr. Chen says.

2. You Have Much less Mucus in Your Nostril

As you age, your physique makes much less mucus, which might have an effect on your sense of odor.

The mucous membranes in your nostril include olfactory receptor cells, which play an necessary function in your skill to odor, in accordance with the Cleveland Clinic.

Earlier than your physique can understand a odor, it enters the nasal cavity and should be absorbed into the mucus of the olfactory lining, Dr. Chen says. “This mucus transmits the odor to your odor receptors,” he provides.

Mainly, mucus helps maintain aromas in your nostril lengthy sufficient to your nerve endings to understand them, per the NLM.

You probably have much less mucus, “the flexibility to hold the odor to the correct location decreases,” and with it, your general sense of odor lessens, too, Dr. Chen says.

However why does mucus manufacturing lower with age, particularly? “We do not have all of the solutions but,” Dr. Chen says. “One principle is that mucous membranes that line the nostril get thinner over time, reducing mucus-producing cells’ productiveness.”

This thinning could also be due partly to poor blood circulation throughout the mucous membranes, which might trigger much less humidification of the air you breathe and result in dryness, he provides.

3. You’re Taking Sure Medicines

As we grow old, we’re extra more likely to take drugs for a medical situation. Seems, sure kinds of medicine may very well be worsening your sense of odor.

“A whole bunch of medicines have been reported to end in odor loss or modifications,” Dr. Chen says. “The explanations for these modifications depend upon the particular pathways and results the medicines have on the physique.”

“For example, some antidepressants accumulate within the cell, resulting in modifications within the biochemical properties of the cell and the response to a stimulus like odorants,” Dr. Chen says.

Different widespread medicines that will reduce your sense of odor embody antibiotics and blood strain drugs, in accordance with the NIA.


When you suspect your medicine is affecting your sense of odor, don’t simply discontinue the drug. At all times communicate together with your physician, who could possibly alter your dose or prescribe you one other sort of medication that doesn’t trigger smell-related unwanted side effects.

4. You’re Present process Radiation, Chemotherapy or Different Most cancers Therapies

Whereas most cancers therapies could be lifesaving, they will generally include unwanted side effects like lack of odor.

For example, “radiation, particularly to the top and neck area, damages the fragile nasal lining,” Dr. Chen says.

Because of this, your nostril makes much less mucus, which, as we all know, can impair odor.

Equally, chemotherapy can kill olfactory cells. It’s because chemotherapy targets quickly replicating cells (together with olfactory cells) and may’t inform the distinction between cancerous and wholesome, noncancerous cells, Dr. Chen says.

5. You Have One other Underlying Well being Problem

Rising older comes with an elevated danger of growing a critical medical dysfunction, a few of which might have an effect on your skill to odor.

For instance, neurodegenerative ailments similar to Parkinson’s, Alzheimer’s and dementia are related to a lack of odor, Dr. Chen says.

In these situations, nerves that connect with the a part of the mind that perceives odor — or the mind itself — can deteriorate, thus reducing one’s sense of odor, in accordance with the Mayo Clinic.

Certainly, “some suppose that irritation on the olfactory bulb, the place odor nerve fibers connect with the mind, causes the nerves to not work as effectively,” Dr. Chen says.

What to Do if You are Shedding Your Sense of Scent

Sadly, dropping your sense of odor is usually out of your management. However there are some issues you are able to do in sure circumstances to stimulate your sniffer. These embody:

Olfactory coaching is a protected and easy method to attempt to convey again odor,” Dr. Chen says. “This consists of sniffing 4 completely different scents (like rose, clove, eucalyptus and lemon) over months to coach the mind tips on how to odor once more.”

Particularly, you sniff every odor twice a day (earlier than breakfast and at bedtime) for 20 to 30 seconds every, in accordance with StatPearls, whereas specializing in what the scent used to odor like. For the perfect outcomes, strive sticking to this follow for a minimum of 24 weeks.

Whereas the precise mechanism is unknown, folks with olfactory dysfunction attributable to a previous an infection, harm and Parkinson’s all appear to profit from olfactory coaching.

In truth, sufferers with post-infectious olfactory issues skilled an enchancment in odor after simply 16 weeks of olfactory coaching and reaped even better outcomes after one yr, per a June 2016 research in Rhinology.

Dehydration can result in dry mouth, per the Cleveland Clinic, and having dry mucous membranes can alter your sense of style and odor.

To remain well-hydrated (and maintain your mucous membranes moist), intention to drink about half your physique weight in ounces of water every day. So for instance, if you happen to weigh 160 kilos, intention to drink 80 ounces, or about 10 cups of water. (Simply make certain to verify in together with your physician first, particularly when you’ve got kidney, liver or coronary heart points, or if you happen to’re taking medicine that causes you to retain water.)

“Many suppose that lack of odor is because of irritation of the olfactory nerves and bulb, and in consequence, topical steroids are sometimes tried to lower this irritation,” Dr. Chen says.

Because of this, steroids are sometimes administered within the type of a sinus irrigation or wash to get the drugs excessive up within the nostril, the place the olfactory fibers stay.

In addition to topical therapies, “some medical doctors strive oral steroids, however there’s not nice proof this works,” he provides.

Sure dietary supplements with recognized anti-inflammatory properties are additionally value attempting when regaining your sense of odor.

For instance, “you may strive fish oil [which contains omega-3s] or vitamin A to assist with irritation,” Dr. Chen says.


At all times speak to your physician earlier than taking a brand new complement to ensure it is protected for you based mostly in your medicines and well being standing.

Speak to your physician if you happen to discover your nostril is not working prefer it used to. Whereas the trigger is usually innocent and a pure a part of growing old, medical doctors may also help correctly assess and decide the basis of your odor notion downside.

As soon as they’ve discovered the trigger, therapy could be tailor-made to your particular scenario, within the type of olfactory coaching or medicine.

Take note, nonetheless, that “if the lack of odor is related to a brand new nasal blockage, bleeding, facial numbness, imaginative and prescient modifications or lumps within the neck, see a health care provider instantly,” as these could also be indicators of a extra critical medical subject that requires consideration proper now, Dr. Chen says.


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