While CBD can come from marijuana, it can also be derived from hemp. Hemp is a related plant with 0.3% or less of THC. This plant is often used to make fabrics and ropes. As of 2018, Congress made hemp legal in all 50 states, and consequently CBD derived from hemp is also legal. The rules around marijuana-derived CBD, however, are far less clear.
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Does CBD work?
If you are interested in trying a CBD product, it’s best to seek one through a dispensary, which is an establishment legally licensed to sell marijuana, if they are available in your state. Dispensary products must be labeled so you can see exactly how much CBD is in the product and whether it also contains THC. A small amount of THC in a CBD product isn’t typically problematic. But larger amounts could cause a “high” and may present a risk if you are going to drive.
Common questions about medical cannabis
Yes and no. Cannabidiol is one of the two best-known active compounds derived from the marijuana plant. The other is tetrahydrocannabinol, or THC, which is the substance that that produces the “high” from marijuana.
"There is a greater public awareness of the potential therapeutic uses of medical cannabis and cannabinoids such as CBD, particularly in light of the UK government decision to permit some cannabis prescriptions in response to high-profile campaigns by the families of children affected by severe epilepsy," says Professor Sumnall.
“CBD tends to work well in foods with a stronger, earthy taste, such as chocolate and coffee”, says Meg Greenacre, head chef at Erpingham House in Norwich. "I’ve been inspired by menus in London to create a delicious CBD brownie for our customers here. I was surprised that during taste tests, no one could tell which brownie the CBD was in and actually, most people thought it was the batch that did not contain it. I am looking into adding CBD to more sweet bakes such as nutty flapjacks and beetroot chocolate cake , which naturally have a deeper and richer flavour, complementing the earthy, almost bitter, taste and smell of CBD oil.
"Many of the CBD products available on the high street contain so little CBD that you would need to consume vast quantities to even approach some of the doses that are administered in clinical trials of medicines", concludes Sumnall.
Is CBD a miracle cure?
“When you cook with CBD, you have to be careful not to heat the mixture at too high a temperature”, advises Meg. A search on CBD websites brings up details of CBD evaporating and losing its 'health' properties past 160–180C, though "there is also little understanding of what happens to CBD when you cook it or add it to a drink", says Professor Sumnall.
CBD is normally sold in combination with a base oil, such as olive or coconut, as a supplement, vape, gel to be applied to the skin and more recently, in food and drink.
"But there is no good scientific evidence that these consumer products have any real benefits.
"CBD is actually hard to cook with. It has a disgusting taste", says Greg Hanger, head chef at Kalifornia Kitchen in London, who has created an entire CBD afternoon tea . Greg pays attention to the type of oil that the CBD is mixed with, saying "coconut oil CBD is great in Thai cooking balanced with coriander, ginger and lime. Olive oil CBD is great for Middle Eastern foods like hummus or you could even mask the flavour with rosemary and put it in cheesy sauce or mashed potatoes ."
However, it is not clear whether it would be advisable to consume higher doses of CBD than is currently in these products. “I do worry that if people believe a small amount is good and it’s completely safe, they may believe a large amount is better, says Dr Sarah Jarvis, GP and Clinical Director of Patient Info."