For most people, the senses of taste and smell are so ingrained in daily life that their absence is only imagined when fighting off a common cold. Yet, for many older adults and long COVID survivors, the loss of these senses has become a lasting reality. The medical term for diminished smell is hyposmia, while complete loss is anosmia. Similarly, reduced taste perception is called hypogeusia, and complete loss is ageusia. Together, these conditions can dull the pleasure of eating, alter nutritional habits, and even affect emotional well-being.
The link between taste and smell is tightly woven. What most people describe as “flavor” is largely the result of olfactory input. When smell is impaired, food often seems bland, leaving only the basic sensations of sweet, sour, salty, bitter, and umami. In aging populations, this decline is common, tied to changes in sensory receptors and a gradual reduction in the regeneration of olfactory neurons. For those impacted by COVID-19, the mechanism often involves inflammation that damages or disrupts the delicate tissues of the nasal passages and olfactory bulb. Some regain their senses within weeks, but others endure persistent deficits that can stretch into years.
Despite the challenges, there are natural methods that can help reawaken or at least enhance the senses. One widely studied approach is olfactory training. This involves repeated, focused exposure to strong and distinct scents such as citrus, clove, eucalyptus, or rose. Over time, the brain appears to strengthen neural pathways associated with smell, much like a muscle responding to exercise. Scientific studies have shown that consistent training, often twice daily for several months, can improve outcomes for those with post-viral smell loss.
Nutrition also plays a role. Zinc and vitamin A are both essential for the maintenance and repair of olfactory and taste receptors. Deficiencies in either can worsen sensory problems. A diet rich in whole foods, leafy greens, nuts, seeds, and colorful vegetables supports overall neural health. Hydration is equally important since dry nasal passages or a dry mouth can blunt sensory input. Spicy foods containing compounds such as capsaicin or gingerol may also help stimulate remaining nerve pathways, creating stronger sensations that bypass damaged receptors.
Lifestyle adjustments make a difference too. Avoiding smoking and reducing exposure to environmental toxins preserves what function remains. Regular physical activity improves circulation, including to the nasal and oral tissues, supporting their ability to regenerate. Mindful eating, where one pays close attention to textures, temperatures, and subtle flavors, can help bring enjoyment back to meals even when smell or taste is muted.
The emotional impact of living without these senses cannot be understated. Many report feelings of disconnection or loss of pleasure in social dining, which can affect mental health. Maintaining variety in meals, focusing on colorful presentations, and pairing food with music or pleasant surroundings can partially restore the joy of eating.
While medical science is still uncovering solutions, the message is hopeful. For those who have lost their sense of taste or smell, particularly after COVID-19, recovery may be slow but is not always impossible. By engaging in olfactory training, supporting the body with proper nutrition, and embracing mindful strategies, individuals can often regain some of what was lost—or at least discover new ways to savor life.