GLP-1 Drugs May Affect Your Sense of Smell, Taste

• Researchers report that GLP-1 medicine used to deal with sort 2 diabetes might impair an individual’s sense of style and odor.
• Specialists say style and odor dysfunction doesn’t look like a typical aspect impact of GLP-1s, that are broadly prescribed for weight reduction.
• The burden loss advantages of those drugs possible outweigh any unfavorable results on odor and style.

GLP-1 drugs prescribed to deal with sort 2 diabetes might have an effect on an individual’s sense of odor and style, in accordance with a brand new examine.

Researchers report that examine contributors who used GLP-1 medicine had the next charge of disturbances in style and odor than individuals who had been solely prescribed diabetes medications.

They mentioned the results of GLP-1s on these sensory features might be related to the medicine’ absorption into an individual’s nervous system.

“This examine means that GLP-1RA remedy is related to the next danger of odor and style disturbance, highlighting the necessity for nearer monitoring and higher public well being consciousness,” the examine authors wrote.

“Future analysis is required to validate these findings and to additional discover the mechanisms underlying this affiliation,” they added.

Specialists say that lack of odor or style from GLP-1 drugs doesn’t look like widespread.

Mir Ali, MD, a bariatric surgeon and medical director of MemorialCare Surgical Weight Loss Heart at Orange Coast Medical Heart in California, mentioned he hasn’t heard many considerations from his sufferers about style or odor impairment. Ali wasn’t concerned within the examine.

“I don’t assume it ought to discourage individuals from taking these drugs,” he informed Healthline. “The trade-off of attending to a healthy weight far outweighs any adjustments to style or odor.”

For his or her examine, the researchers examined the medical information of two teams of contributors within the TriNetX Global Collaborative Network program, which concerned greater than 170 healthcare establishments from December 2017 to April 2026.

Every group consisted of greater than 430,000 adults with a prognosis of type 2 diabetes who had no historical past of style or odor impairment. Members in every group had been about 55% feminine, with a median age of about 57 years.

One group had been prescribed a GLP-1 drugs after their diabetes prognosis. The opposite group was prescribed a diabetes treatment however didn’t use any GLP-1 medicine.

There was a follow-up interval of three months to 2 years after the discontinuation of the usage of GLP-1 drugs.

The researchers reported that style disturbances had been recognized in 769 contributors within the GLP-1 group, in contrast with 445 within the management group.

Odor disturbances had been reported by 649 contributors within the GLP-1 group, in contrast with 316 within the management group. The researchers mentioned that the odor and style dysfunction might be associated to the olfactory bulb and chemosensory pathways.

“These findings align with proof that GLP-1 is broadly expressed and secreted throughout the nervous system, supporting potential results in both the central or peripheral nervous system,” the researchers wrote.

Ali mentioned weight reduction can have an effect on an individual’s sense of style and odor. He added that there aren’t actually any therapies for non permanent odor and style dysfunction. “As weight stabilizes, style and odor are inclined to return to a extra regular state,” he mentioned.

Zhaoping Li, MD, a professor of medical drugs on the College of California, Los Angeles, famous the brand new examine is observational and doesn’t show a cause-and-effect relationship between GLP-1s and impaired style and odor. Li wasn’t concerned within the examine.

Li shared that her sufferers haven’t encountered severe odor or style dysfunction. “It has not been a serious concern,” she informed Healthline. “I don’t assume it’ll have a serious influence on individuals’s acceptance of those medicine.”

Li mentioned that style and odor impairment brought on by the treatment has a easy answer. “Whether it is associated to the medicine, then you definately cease taking the medicine,” she mentioned.

It’s estimated that 12% of individuals in america have some kind of odor dysfunction. That proportion is increased in older age teams.

Specialists say odor has many necessary features. They are saying it helps individuals decide what to eat, influences meals style, and impacts socialization. Odor additionally offers a warning for hazardous occasions corresponding to fires or gasoline leaks.

The sense of odor is related to the a part of the mind concerned in behavioral and emotional responses. That’s why sure odors spark robust feelings, affect habits, and set off reminiscences, in accordance with UCLA Health.

Impaired smell will be the entire lack of ability to odor or the partial lack of ability to odor. It may be a brief or a everlasting situation.

Momentary odor dysfunction will be brought on by allergic reactions or bacterial and viral infections. In older adults, impaired odor is taken into account a typical age-related change. Nevertheless, it can be an indication of:

It’s estimated that nearly 20% of individuals in america over the age of 40 have some alteration of their sense of style.

Your sense of taste helps you consider meals and drinks, so you possibly can decide what’s fit for human consumption. It additionally prepares your physique to digest meals.

You possibly can develop impaired taste from respiratory sicknesses corresponding to COVID-19, in addition to allergic reactions, sinus infections, or nasal polyps. Some drugs can also have an effect on the sense of style, as can dental circumstances corresponding to gum disease and insufficient oral hygiene.

Odor and style disturbances have additionally been reported in individuals with sort 2 diabetes.

Li mentioned the COVID-19 pandemic has made individuals extra delicate to adjustments in style and odor. “COVID actually taught us a lesson on this regard,” she mentioned.

GLP-1 medications work by suppressing an individual’s urge for food and managing their blood sugar ranges.

A few of the medicine are taken day by day as oral tablets, whereas others are injected on a weekly foundation.

Some are accredited as prescription therapies for sort 2 diabetes, whereas others, corresponding to Wegovy, Zepbound, and Saxenda, have been accredited as weight reduction therapies.

Researchers have reported that GLP-1 medicine that include the energetic ingredient tirzepatide could also be simpler for weight reduction than GLP-1 drugs that include the energetic ingredient semaglutide.

A 2025 study concluded that GLP-1 medicine can assist enhance coronary heart and mind well being however may also trigger kidney and gastrointestinal points.

In December 2025, the World Well being Group (WHO) issued new guidelines recommending GLP-1 drugs to assist deal with weight problems.

Ali mentioned individuals beginning GLP-1s want to acknowledge that the medicine solely suppress urge for food, and a wholesome way of life that features a balanced weight loss plan and regular exercise is necessary.

“The drugs are solely a instrument to assist sufferers swap to a extra nutritious diet,” he mentioned. “Folks have to consider weight problems as a long-term situation.”