When compared with the effects of caffeine, one could go out on a limb and say that CBD and caffeine are on different sides of the spectrum. Sure, they’re both anti-inflammatories, but you’re not as likely to fall asleep in your cereal after chugging a mug of coffee. You can see where I’m going with this, right? CBD coffee is a liquid contradiction.
Other studies have been done in lab animals, or in vitro (meaning in a test tube, using animal brain tissue). Those studies have found anxiety-reducing effects but only at midlevel dosages, in the range of 10 to 20 mg per kg. As an example, one study found that CBD can, in rats, be an effective anti-inflammatory painkiller — at 20 mg per kg. It’s not a direct translation, but that dosage would be somewhere in the range of several hundred milligrams for an adult human.
The CBD present in oils and other products is usually derived from fiber-type varieties of cannabis (hemp), because these are naturally higher in CBD content than drug-type varieties (marijuana). Although cultivation of hemp is allowed in many countries around the world, this is usually governed by strict regulations. After being banned for decades, hemp cultivation in the USA has only recently been reintroduced, and is still gearing up for full industrial production .
"Cannabinoids have been found to have antioxidant properties, unrelated to NMDA receptor antagonism. This new found property makes cannabinoids useful in the treatment and prophylaxis of wide variety of oxidation associated diseases, such as ischemic, age-related, inflammatory and autoimmune diseases. The cannabinoids are found to have particular application as neuroprotectants, for example in limiting neurological damage following ischemic insults, such as stroke and trauma, or in the treatment of neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease and HIV dementia.
Scientists have made a lot of progress in understanding how CBD produces its calming, pain-reducing, anti-inflammatory effects in the body—and there’s still more to learn. We know that CBD interacts with many different receptors, proteins, and other chemicals in the brain. These interactions create changes in the activity of neurotransmitters, hormones, and other cells throughout the brain and body. Through these interactions, CBD appears to be able to affect many of the body’s functions, from sleep-wake cycles and emotional regulation to inflammation, pain perception, and seizures.