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Exposure to certain chemicals or medications.Middle ear and upper respiratory infections.Common reasons for a loss of taste include the following: Most people develop taste disorders after illness or injury, although some people are born with them. Dry mouth can also affect your sense of taste. You might also experience dry mouth because your mouth produces less saliva as you age. Sensitivity to the five tastes (sweet, salty, sour, bitter, and umami) typically declines after age 60. Did you know that most people have about 10,000 taste buds? According to MedlinePlus, this number decreases as you age, and each taste bud that remains also begins to shrink. That said, many other factors can cause a loss of taste, like cigarette smoking and increased age. If you're experiencing a sudden loss of taste alongside other COVID-19 symptoms, contact your healthcare provider as soon as possible. The Centers for Disease Control and Prevention has listed the new loss of taste and smell as a symptom of COVID-19. “Some people have been vaccinated with different vaccines, some have been boosted, some have had Covid multiple times.Recently, if you've heard about people losing their sense of taste, it's most likely related to COVID-19. “Now that we are two years in, we have very variable reinfection and vaccination rates,” she said.

“For different variants, I think what we are going to find is that different variants affect those cells differently, and the amount of destruction or long-term inflammation will also be different,” Roland said. Recently, most seem to be converging around one main idea: the virus appears to damage cells that support the olfactory neurons, making it harder to send information about smell to the brain. Throughout the pandemic, scientists have explored many theories as to how the coronavirus leads to loss of smell.

“But when you administer a smell test, we’re seeing about 25% of people have an impaired sense of smell, which is not a small number.” The science of smell loss “When we ask people if they lose their taste and smell, we have a cohort of people who say yes, those are the ones who lost their full sense of smell,” she said.