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  • Loss of Taste in...

Loss of Taste in Adulthood Closely Linked to Higher All-Cause Mortality: Study

Written By : Jacinthlyn Sylvia |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2025-02-20T21:30:06+05:30  |  Updated On 20 Feb 2025 10:02 PM IST
Loss of Taste in Adulthood Closely Linked to Higher All-Cause Mortality: Study
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A new study published in the Journal of American Medical Association revealed a strong connection between the loss of taste perception from early adulthood to mid-to-late adulthood and an increased risk of all-cause mortality. This study utilized data from the US National Health and Nutrition Examination Survey (NHANES) and the National Death Index (NDI) which suggest that adults who experience a subjective decline in taste function face a significantly higher mortality risk.

The population-based cohort study analyzed data from a total of 7,340 participants aged 40 years and older between 2011 and 2014. This study tracked mortality outcomes through the NDI up to December 31, 2019, with a median follow-up period of approximately 6.67 years. During this time, 1,011 deaths were recorded.

Of the participants, 662 individuals (weighted at 8.9%) reported a perceived decline in their ability to taste basic flavors (salt, sourness, sweetness, or bitterness) since the age of 25. This group expressed a 47% higher risk of death when compared to those who did not report taste loss, even after adjusting for various demographic and health-related factors (adjusted hazard ratio [aHR], 1.47; 95% confidence interval [CI], 1.06-2.03).

The study identified that the type of taste affected plays a critical role in mortality risk. The individuals reporting a decline in their ability to taste salt faced a 65% higher mortality risk (aHR, 1.65; 95% CI, 1.21-2.26). The participants with reduced sensitivity to sourness experienced a 69% increased risk (aHR, 1.69; 95% CI, 1.19-2.40).

Also, the study highlighted gender-specific variations where a decline in the ability to taste bitterness was linked to increased mortality risk only in women (aHR, 1.63; 95% CI, 1.05-2.53). The reduced sensitivity to sourness was associated with increased mortality only in men (aHR, 1.69; 95% CI, 1.03-2.75).

The study also examined whether the ability to smell could reduce the mortality risk associated with taste loss. Among both men and women without reported smell function decline, those who still experienced taste loss remained at higher risk of death. This suggests that the increased mortality risk linked to taste loss is independent of olfactory function.

In participants without perceived smell loss, the mortality risk was 64% higher for those who experienced taste loss (aHR, 1.64; 95% CI, 1.12-2.40). For women, this risk increased even further to 71% (aHR, 1.71; 95% CI, 1.14-2.56). Overall, the outcomes indicate that self-reported taste function loss could be a simple yet powerful indicator for identifying individuals at higher risk of death.

Source:

Zhu, R., Wang, R., He, J., Zhang, L., An, P., Li, K., Ren, F., Xu, W., & Guo, J. (2025). Perceived taste loss from early adulthood to mid to late adulthood and mortality. JAMA Otolaryngology-Head & Neck Surgery. https://doi.org/10.1001/jamaoto.2024.5072

JAMA Otolaryngology-Head &Neck Surgeryloss of tasteall-cause mortality
Source : JAMA Otolaryngology-Head &Neck Surgery
Jacinthlyn Sylvia
Jacinthlyn Sylvia

    Neuroscience Masters graduate

    Jacinthlyn Sylvia, a Neuroscience Master's graduate from Chennai has worked extensively in deciphering the neurobiology of cognition and motor control in aging. She also has spread-out exposure to Neurosurgery from her Bachelor’s. She is currently involved in active Neuro-Oncology research. She is an upcoming neuroscientist with a fiery passion for writing. Her news cover at Medical Dialogues feature recent discoveries and updates from the healthcare and biomedical research fields. She can be reached at editorial@medicaldialogues.in

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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