evidence: Research has linked the use of cannabis products with an increased likelihood of developing head, neck, or throat cancer,40 particularly in people who smoke cannabis.41 [...] However, risk factors for cannabis use are similar to risk factors for use of other drugs with addiction potential,72 and studies have associated use of cannabis with developing cannabis use disorder. Using these products at a younger age in particular increases the likelihood of developing a cannabis use disorder later in life.73,74 In addition, using cannabis may cause brain changes that can make a person more likely to develop an addiction to other drugs.75 [...] - NIDA also funds research on potential therapeutic uses of cannabis and cannabinoids to reduce use of other substances, including opioids.