ANOSMIA

This study tests whether injecting a person's own concentrated platelets (PRP) into the nose can improve smell loss caused by aging or head injury. Thirty adults with long-term smell problems will receive three injections over four weeks and be monitored for six months. The goal …

This study tests two methods of delivering platelet-rich plasma (PRP) to help adults who have had a poor sense of smell for over three months. One method uses a small sponge soaked in PRP placed in the nose, the other uses an injection. Sixty participants will receive one treatme…

This study tests whether adding insulin to a platelet-rich plasma nose spray helps people who lost their sense of smell after an infection. Twenty adults who still can't smell well despite training will get either the combination spray or plasma alone. Researchers will measure ho…

This study tests whether a smartphone-based exercise program is practical and acceptable for adults aged 40 and older with a reduced sense of smell (hyposmia). Participants will be randomly assigned to either a full-dose program aiming to double their daily steps or a low-dose co…

This study looks at how the brain works differently in people with smell problems caused by things like infections or injuries. Researchers will use brain scans, smell tests, and questionnaires to track changes over one year. 80 adults (including healthy volunteers) will take par…