The latest study, published in the Journal of Gerontology: Medical Sciences, looked at how smell might be linked to depression.At the beginning of the study, 28 percent showed a decreased sense of smell , and another 24 percent displayed a profound loss of the sense .Further analysis revealed those with decreased sense of smell at the beginning of the study were more likely to end up with depression.
Prof Vidya said: "Losing your sense of smell influences many aspects of our health and behaviour, such as sensing spoiled food or noxious gas, and eating enjoyment. "Now we can see that it may also be an important vulnerability indicator of something in your health gone awry." Researchers suggest the brain’s olfactory bulb, which processes smells, and the part of the brain responsible for emotions are closely linked.The NHS says the most common psychological symptoms of depression include: