CBD’s effect on homeostasis is believed to be why those in need of nutrition can experience an appetite increase and those with excess weight can experience an appetite decrease. The reason for this is that CBD is an adaptogen. Referred to by some scientists as “the boy scout molecule” because it always does the right thing in any given situation. The Journal of  Psychopharmacology tested this theory on rats in 2012. The researchers wanted to see how three common cannabinoids, including CBN, CBD, and CBG, affected the appetite of the rats. The study concluded that both CBD and CBG worked to reduce the rat’s appetite.
To briefly review, the endocannabinoid system (ECS) is a group of specialized fatty acid-based signaling chemicals (think “keys”), their receptors (think “locks”), and the metabolic enzymes that produce and break them down. These endocannabinoid chemical signals act on similar brain and immune cell receptors (CB1 and CB2) using the active compounds found in cannabis – cannabidiol (CBD), and Δ9-tetrahydrocannabinol (THC).
CBD interacts with the body’s endocannabinoid system; this system exists to keep our bodies in balance. Most of the time when someone is overweight there is one main culprit that leads to them struggling with weight loss: metabolism. Metabolism and weight loss are very connected because your metabolism is what converts food into energy in the body. It’s also responsible for the body’s ability to burn calories and the rate at which it does so.
Due to the uniqueness of everyone’s endocannabinoid system, CBD does not affect any two people the same way. There are a host of factors that influence its efficacy, including genetics, previous history of use, general health, weight, ethnicity and so on. Therefore, while one person may find that 15 mg of CBD a day works wonders for suppressing appetite and boosting weight loss, another may require up to 100 mg (or more) in order to achieve the same results (or they may not experience any results at all). 

When the endocannabinoid system becomes dysregulated, it often becomes overactive and too much fat is being stored, particularly in the intra-abdominal tissue. Cannabidiol is known to regulate the endocannabinoid system as it can restore balance in both directions. Therefore, the study concludes that, along with lifestyle changes cannabis could be a means of fighting obesity.