Age-related decrease of odorant sensitivity for a selection of nine diverse molecules

In conclusion, based on the present findings, odor thresholds decrease with age, with a pronounced effect for molecules with higher weight. Previous studies suggest that the decline in olfactory function is more significant for certain molecules. However, the current results indicate that this may be an odorant-specific phenomenon, as we did not observe this behavior in our study, which included a selection of nine diverse molecules.