Cannabis users tend to consume more water, as cannabis is lipophilic and is known to cause dehydration. Also, a lot of self-reporting users aren't honest. And cannabis itself has changed dramatically over the last 10 years, so this study isn't sound. It also doesn't address methods of consumption, the impact of smoking cigarettes on all of this, and other comorbidities and food consumption in an under-served population. Cannabis acts as a homeostatic mechanism in the mammalian body - we know this. Either the article isn't in-depth enough, or the study is flawed or both.