> rugs possession offenses also drop noticeably once a plasma centers opens – by 14.3%. We posit that this relates to the drug and blood-quality regulations implemented plasma centers.

This is rather wild as a fact, but also correlates well with previous studies, showing financial incentives do indeed help regulate health for example weight loss (https://www.stir.ac.uk/news/2024/may-2024-news/cash-incentiv...).