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The symptoms of a weed hangover range from headache, nausea, brain fog, dehydration, lethargy to dry eyes. Overconsumption, like it is with alcohol, is the key.

Bethany Rae, founder of Flower & Freedom, a community exploring cannabis use for fitness, admits to experiencing brain fog and a feeling of lethargy when she goes over her sweet spot. “The term hangover doesn’t necessarily make sense to me. But I have experienced brain fog and the feeling of lethargy from overconsuming cannabis—particularly from too many edibles.” Rae uses cannabis for pain relief, anxiety and depression. “I understand cannabis to be a lot like food, and not so much like alcohol or tobacco. When you have education around nutrition, you know what to eat and how much. With cannabis, it’s the same; understanding the amount and strain type is crucial,” she says.

What do the studies say about cannabis hangovers?

Conclusively, not a lot. There’s lack of extensive research done on this topic, and two most commonly known studies were conducted in 1985 and 2006.

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The study conducted is 1985 saw participation from 13 male marijuana smokers. The purpose of the study was to determine whether marijuana smoked in the evening would result in subjective or behavioural effects the following morning. “The findings suggest that marijuana smoking can produce residual (hangover) effects the day after smoking. The precise nature and extent of these effects, as well as their practical implications, remain to be determined,” notes the study abstract.