This is half true. Uncooked weed is less effective. Delta-9 THC is psychoactive, but weed has both THC and a carboxylic acid derivative that can be converted to THC through heat.
The only problem with @pixelshifter’s statement is that THC isnt being decarboxylated, THC is the end product of a decarboxylation of a related molecule. “Cooking” THC is going to get you something else depending on what you mean by “cook.” Marijuana being a natural product means the THC to THCA content will vary season to season, plant to plant, and plant part to plant part.
