Trondheim's Waste Policy Spread Parasites

Archaeological and historical evidence from medieval Trondheim shows that municipal efforts to remove foul‑smelling latrine waste (driven by miasma theory and wood‑chip masking) led to that waste being carried out to farmland and used as manure, which introduced roundworms into the food supply and infected most of the population. The episode reframes medieval public health as a case study in unintended ecological and epidemiological consequences of sanitation choices. — This highlights a perennial policy problem: sanitation and waste‑management interventions can produce worse public‑health outcomes if they don't account for pathogen ecology and reuse pathways, a lesson relevant to modern decisions about waste recycling, biosolids, and low‑resource sanitation.