Unlike CBD, THC produces a euphoric effect and is illegal in many areas.
Some people prefer to take full-spectrum CBD oil because it is usually the most desired because of the enhanced benefits it may provide. Full-spectrum CBD oil includes all naturally occurring compounds of the plant. All of the natural compounds working together are known as the entourage effect  .
What does the research say?
We know that one of the most common side effects related to cancer treatment is loss of appetite  . Not eating enough can deprive your body of essential nutrients resulting in malnutrition, leading to even more negative side effects.
Using a CBD inhaler
There are not many clinical studies as of now on proper dosages of CBD oil for cancer treatments.
In a 2016 study, researchers found that chronic lymphocytic leukemia (CLL) cells have high quantities of cannabinoid receptors, 2 but were unable to show that adding synthetic cannabinoids alone to CLL cells could significantly reduce their viability or ability to migrate. 2 However, subsequent studies have shown that using natural cannabinoids, including cannabidiol (CBD) and tetrahydrocannabinol (THC), can have anticancer activity in leukemia cells. 3 Notably, the ability to kill leukemia cells was improved when cannabinoids were used together, and an even stronger effect was seen when cells were treated with cannabinoids at the same time or right after having received chemotherapy. 3
This means that CBD is generally available to individuals across the country, and often without a prescription. Because CBD is primarily marketed as a supplement, and not a medication, the US Food and Drug Administration does not regulate its safety or purity. 4 Those considering using CBD should exercise caution, however. There are currently no regulations to ensure that the product they buy contains the active ingredients listed on the label. 4 Furthermore, the CBD products could also contain other, unknown components. 4 Finding the right dose of CBD can also be a challenge due to the absence of high-quality clinical studies, so individuals will have to experiment to find what works for them. 1,4
Although these findings are promising, it is important to remember that there is a lack of human clinical trials in this area. 1 Cannabis extracts containing CBD, which by itself does not cause the “high” associated with THC, have a complicated legal status in the United States; all 50 states have legalized CBD, with some restrictions, whereas the federal government still considers it illegal but has refrained from enforcement. 4
Inside the body, cannabinoids function by binding to specialized cannabinoid receptors on the outside of cells. 2 Cannabinoid receptors are commonly found in the brain and on cells of the immune system but have also been found in high quantities in both solid tumors and cancers of the blood. 2 Interestingly, exposing cancer cells to cannabinoids in a laboratory has been shown to inhibit their ability to move, grow, divide, and produce new blood vessels—crucial features for a cancer cell. 2