The researchers used modelling to estimate how many people go on to suffer from altered taste or smell for at least six months after a Covid-19 infection. The study reviewed data from 18 studies involving 3,699 patients. Loss or change of sense of smell or taste can lead to “severe distress”, they say, and they call for health systems to be better prepared to support people who often feel “isolated” when dismissed by clinicians.ĭaily activities such as smelling coffee and testing the flavour of food can become “disgusting and emotionally distressing”, experts say. Given the devastating effect that loss of smell and taste can have on quality of life and wellbeing, this will have a huge impact on global health, the team of international researchers say. With more than 550m confirmed Covid-19 cases to date, it means there may be long-term smell deficiencies for 15 million people and taste problems for 12 million (with an unknown overlap of those suffering both) for at least six months after an infection.
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