Some cannabis studies may overstate the substance’s benefits because participants know when they are ‘high’, one scientist argues.
Countless studies have shown that active cannabinoids can effectively treat everything from chronic pain to depression and PTSD – at least according to high people.
Most cannabis studies are double-blind trials, meaning that neither researchers nor participants know which of two groups got a sample containing active cannabinoids, and which got an otherwise identical, inactive substance.
But when feeling ‘high’ tips off participants in studies using THC – the cannabis chemical the creates that euphoric feeling – the results become skewed, argues one Duke University medical professor.
Cannabis studies may be overestimating its medical benefits because participants know