 Some safer cannabis usage campaigns including the UKCIA (United Kingdom Cannabis Internet Activists) encourage methods of consumption shown to cause less physical damage to a users body, including oral (eating) consumption, vaporization, the usage of bongs which cool and to some extent filters the smoke, and smoking the cannabis without mixing it with tobacco.The fact that cannabis possession carries prison sentences in most developed countries is also pointed out as a problem by European Monitoring Centre for Drugs and Drug Addiction (EMCDDA), as the consequences of a conviction for otherwise law-abiding users arguably is more harmful than any harm from the drug itself.For example, by adversely affecting employment opportunities, impacting civil rights, and straining personal relationships.