CBD cannabidiol is a non-psychotropic, non-addictive phytocannabinoid.
CBD is known as an inverse agonist of the CB1 and CB2 cannabinoid receptors. CBD and THC are the most studied phytocannabinoids that occur naturally in cannabis. Although CBD and THC are found in the same plant, they act differently on cannabinoid receptors and provide different effects on the body and endocannabinoids. For example, THC stimulates CB1 cannabinoid receptors, and CBD blocks the activity of these receptors, thereby reducing the psychoactive effects of THC. 
Research over the past few decades has shown that CBD affects not only the endogenous cannabinoid system but other body functions as well. The use of CBD products is beneficial in case of a variety of health problems, including neurological, neurodegenerative, inflammatory, and oncological diseases.
With its neuroprotective properties, CBD helps protect the nervous system from injuries such as trauma, alcohol-related damage, and more.   Antipsychotic and anxiolytic properties and stimulation of serotonin production have been shown to benefit patients with schizophrenia, depression, post-traumatic stress disorder, or panic attacks.  
Cannabidiol is known as an immunomodulator and may, therefore, be effective for use in immunocompromised or autoimmune diseases. 
There is a need for as much research as possible on the benefits of CBD and other cannabinoids in the case of cancer, but it has already been shown that CBD not only reduces the side effects of chemotherapy and radiotherapy but also helps stop the spread of cancer cells and affects their apoptosis.  
CBD oil provides many different benefits and acts very widely in the body, but perhaps the most valued property of CBD is its ability to inhibit certain enzymes (fatty acid amide hydrolase or FAAH) that break down Anandamide.
Inhibition of FAAH enzymes increases the concentration of Anandamide in the body and keeps it active for a longer time.