Noses know about longevity

A study among a nationally representative sample of adults aged 57–85 found those who lost their sense of smell and were already at high risk from medical conditions had more than double the risk of dying in the next five years.

The cohort of 3000 provided baseline data by trying to identify odours, which were, in order of increasing difficulty to pinpoint, peppermint, fish, orange, rose and leather.

Five years later, the researchers assessed which participants were still alive.