Marijuana can produce acute psychotic episodes at high doses, and several studies have linked marijuana use to increased risk for chronic psychosis in individuals with specific genetic risk factors. Research suggests that these effects are mediated by THC, and it has been suggested that CBD may mitigate these effects.xxxi There have been a few small-scale clinical trials in which patients with psychotic symptoms were treated with CBD, including case reports of patients with schizophrenia that reported conflicting results; a small case study in patients with Parkinson’s disease with psychosis, which reported positive results; and one small randomized clinical trial reporting clinical improvement in patients with schizophrenia treated with CBD.xxxii Large randomized clinical trials would be needed to fully evaluate the therapeutic potential of CBD for patients with schizophrenia and other forms of psychosis.
Due to its high content of omega 3 and omega 6 fatty acids, hemp oil has a composition similar to skin lipids, which makes it an excellent natural emollient and moisturizer. It is especially useful for dry, tired or dehydrated skin and nails. It increases the skin elasticity and water retention capacity in tissues. Pure hemp oil can be used to treat dry hair and is often included in hair conditioners.
Distinguishing cannabis and hemp can be confusing, so let's make it simple. There are many varietals of Cannabis sativa, all of which have different amounts of THC and CBD. Cannabis sativa varietals that have more than 0.3 percent THC are commonly referred to as marijuana. Hemp is any varietal of Cannabis sativa that contains less than 0.3 percent THC.
Some manufacturers ship CBD products nationally, an illegal action which the FDA has not enforced in 2018, with CBD remaining the subject of an FDA investigational new drug evaluation, and is not considered legal as a dietary supplement or food ingredient as of December 2018. Federal illegality has made it difficult historically to conduct research on CBD. CBD is openly sold in head shops and health food stores in some states where such sales have not been explicitly legalized.