Surprisingly, co-occurring cannabis use disorders and nicotine dependence were not significantly associated with any physical health problem. The lack of significant findings related to physical health may be due to the relatively young age of individuals who used both cannabis and tobacco. Survey respondents with co-occurring cannabis use disorders and nicotine dependence were, on average, in their early to mid-30s and may not have been old enough to have developed significant health problems. Supporting this argument is a study that did detect physical health problems in adults with co-occurring cannabis and tobacco use, all of whom were at least 40 years old (Rooke et al., 2013). Alternatively, the lack of significant findings may be due to the relatively serious nature of the physical health problems assessed in the NESARC.
