The difficulty arises when contaminated foodstuffs, such as wild produce from the forests in areas that have been exposed to radioactivity for centuries, are not only consumed locally, but are also sold in otherwise uncontaminated areas, where they are believed to be harmless.
Dificultăţile apar atunci când produsele alimentare contaminate, precum carnea animalelor sălbatice din pădurile din zonele expuse la radioactivitate timp de mai multe secole, nu sunt consumate doar la nivel local, ci sunt comercializate şi în zone necontaminate, unde sunt considerate inofensive.