You can guarantee (for some period of time likely) that your children have an artificial tolerance for drug use w/o any ill effects. Cocaine is used in doses (

You can guarantee (for some period of time likely) that your children have an artificial tolerance for drug use w/o any ill effects. Cocaine is used in doses (tens of milligrams) that are gigantic by the standards of the immune system. It takes aggressive immunization to create enough antibodies, which would produce frequent autoimmune disorders in a large population.