Since 2017, the DrugAge database has been a resource cataloguing longevity studies for many substances fed to animals in lab experiments. A preprint by Parish et al was recently posted to the bioRxiv website which assessed the quality of these various studies and sought to draw conclusions. Parish et al include a table of drugs (including supplements) that have been tested for life extension in different model animals. One of the first conclusions they draw is that the correlation between what w...