4. Khat
Addiction rate: 1.04
Next on the list of least addictive drugs is actually a herbal drug from Africa, especially Somalia, which is very popular among the adult population there. Since it causes relaxation and calmness, people chew its leaves daily, as a part of their culture. That is why is it hard to define how many people actually use this drug, especially among the East European and American populations. There are many proofs that Africans who came to the US started growing this plant in their homes.
