So according to Wikipedia they can tell the ages from the bones which makes sense due to things like cranial seams sealing up as we get to 30. What I don’t get is how the hell do they know they were engaging in sex work or drugs? Skeletons don’t show marks of sex slavery or prostitution… you’d need to ID an individual for that information as well as drug use. Missing teeth doesn’t always mean drugs, could be purposely removed or malnutrition etc.