A recent study by scientists from the Charlie Dunlop School of Biological Sciences and The Oxford Research Centre in the Humanities found an important link between loss of the sense of smell and a host of diseases, including neurological disorders such as Alzheimer's disease and Parkinson's disease. The work was published in Frontiers and highlights the critical role of the sense of smell in overall health. The study covers 139 different medical conditions that are associated with loss of smell and increased inflammation. Researchers suggest that loss of the sense of smell may serve as an early warning signal of the development of a number of diseases. This discovery could be an important step in the early diagnosis and prevention of diseases, allowing doctors to more effectively respond to symptoms and offer appropriate treatment. In addition, the study showed that “olfactory enrichment” - exposure to pleasant odors - can significantly reduce inflammation levels in the body and improve cognitive function. This discovery offers new perspectives for developing treatments based on the use of aromatherapy and other forms of olfactory stimulation. Thus, the results of the study emphasize the importance of the sense of smell not only as a sense, but also as an indicator of a person's overall health. The sense of smell may be the key to understanding and preventing serious diseases, making further research in this area particularly relevant.