CO2 extraction is one of the most common ways CBD is extracted from the hemp or cannabis plants. This method uses expensive equipment that adjusts temperature and pressure to extract the cannabinoids from the plant material, without damaging them. The other common method is to use solvents like ethanol or butane to extract the plant material. These solvents have to be burned off the final product which may damage the cannabinoids or terpenes in the process. There is also a risk that these solvents may not have burned off completely and could end up in your end product.
Moreover, the inconsistency (to put it mildly) of the weight loss “industry” is probably more sketchy and less regulated than the current state of the cannabis industry. Google ‘weight loss scams,’ for instance, and you get 5.76 million search results! There have been some shocking scams over the years, including vibration machines, weight loss pills (containing poisons such as arsenic), and ‘Vision-Dieter Glasses,’ just to name a few.