Being a hyperaccumulator also has drawbacks: If a hemp plant that is used in production of CBD oil was cultivated in a land that is rich in heavy metals such as mercury and lead, the resulting oils will also reflect the amount of heavy metals absorbed by the plant, making it unsafe for humans to consume, especially children or others who are extremely vulnerable to toxins.
Some companies, especially those who sell their products at a ridiculously low price, may use cheap methods when extracting CBD oil. This requires toxic solvents that are dangerous to our health such as propane, hexane, pentane and butane. Two of these are commonly used in gas stoves and ranges, such as propane and butane, and all of them are hydrocarbon gases found in petroleum.
In addition, CBD oil can be extracted and manufactured through “supercritical CO2 extraction.” This process involves using carbon dioxide under high pressure in an extremely cold environment. Supercritical CO2 extraction requires expensive equipment, more complex refinement process and production expertise, but it ensures that CBD oil maintains its purity all through the process.
Hemp is a bioaccumulator, meaning it is capable of absorbing both the good and the bad from the air, water, and soil in which it’s grown. This makes it all the more important to know that your CBD oil comes from organically grown hemp that can be tracked to its US-grown source. The last thing buyers want is for their CBD oil to have accumulated toxic substances such as pesticides, herbicides, or heavy metals. For decades, farmers have used pesticides to protect crops against insects, disease, and fungi – and have used herbicides to control weeds – but we’ve known for quite some time that chemicals used to harm other species can also be harmful to our own species. That’s one big reason behind the global push to go organic. People are starting to prioritize organic crops, whether you’re talking about fruits, vegetables, grains, legumes, nuts, livestock feed – even textiles like cotton, wool, and flax.