Compounds in Cannabis May Combat Obesity Without Causing Psychoactive Effects

What if compounds in cannabis could help with weight loss instead of increasing hunger? Scientists have discovered substances capable of reducing body fat and improving metabolism, paving the way for new treatments against obesity.

When cannabis is mentioned, many people immediately think of the famous appetite boost, popularly known as "the munchies." Therefore, it may seem contradictory to imagine that compounds derived from the plant could help combat obesity.

However, new research has yielded surprising results: certain compounds present in cannabis have been associated with reduced body weight, decreased body fat, and improved metabolism in obese animals.

Scientists have been observing a curious phenomenon for years. Although acute cannabis use increases hunger, people who use the plant regularly seem to have lower rates of obesity and type 2 diabetes compared to the general population. To understand this apparent paradox, researchers decided to investigate what happens in the body after prolonged exposure to cannabis compounds.

In the study, mice were fed a high-fat, high-sugar diet for two months, similar to the dietary pattern associated with the development of obesity in humans. After 30 days, some of the animals began receiving tetrahydrocannabinol, known as THC, the main psychoactive compound in cannabis, daily.

Another group received complete plant extracts containing THC and several other natural cannabinoids. The scientists monitored the animals' weight, body fat percentage, blood glucose levels, insulin sensitivity, and various metabolic changes related to obesity.

The results were noteworthy. Both isolated THC and complete extracts reduced weight gain and body fat in obese animals. However, the plant extracts showed an important additional benefit: they significantly improved blood glucose control, restoring levels similar to those observed in lean animals. This suggests that other compounds present in cannabis may act in conjunction, producing broader metabolic effects than THC alone.

The researchers also analyzed fat cells in the laboratory to better understand the mechanisms involved. They observed that cannabis compounds hindered the formation of new fat cells and altered how these cells used energy.

Furthermore, the treatments helped normalize chemical signals produced by adipose tissue that directly influence appetite, fat storage, and insulin action. In other words, cannabis appears to have affected central biological systems involved in the development of obesity.

Despite the promising results, scientists warn that the research was conducted only on mice and laboratory cells. This means it is not yet possible to say whether the same effects will occur in humans.

Even so, the study paves the way for the development of new drugs inspired by cannabis compounds capable of combating obesity and improving metabolism without necessarily producing psychoactive effects. If future research confirms these findings, we may be facing a completely new approach to treating one of the world's biggest public health epidemics.

READ MORE:

Δ9 Tetrahydrocannabinol and cannabis extracts differentially improve adipoinsular dysfunction in diet-induced obesity

Bryant Avalos, Martin Olmos, Courtney P. Wood, Camila Alvarez, Haley M. Read, Parima Udompholkul, Theodore Garland, and Nicholas V. DiPatrizio

The Journal of Physiology. 11 May 2026

DOI: 10.1113/JP290431

Abstract: 

Diet-induced obesity (DIO) is associated with dysregulated adipoinsular axis and endocannabinoid system (eCBS) function. Acute cannabis consumption stimulates appetite; however, chronic consumption is paradoxically associated with lower prevalence of human obesity and type 2 diabetes. We investigated the impact of chronic exposure to Δ9 tetrahydrocannabinol (THC) and cannabis extracts on DIO and glucose homeostasis in mice. Male mice were fed a high-fat/sucrose diet or a low-fat/no-sucrose diet for 60 days. At day 30, mice were administered THC (5 mg/kg) or cannabis extracts matched for THC content daily for 30 days. We assessed adipocyte biology, glucose tolerance, insulin sensitivity, eCBS expression, body weight, food intake and motor activity. Roles for the eCBS in cannabis-induced changes in metabolic processes, including cellular bioenergetics, were analysed in 3T3-L1 adipocytes. THC and extracts reduced body weight and fat mass in DIO mice, and reversed DIO-associated changes in expression of adipokines that regulate the adipoinsular axis. Extracts normalized expression of adipokines more effectively than THC. Notably, extracts – but not THC – normalized glucose clearance in DIO mice to levels found in lean mice. In addition, THC and extracts promoted anti-adipogenic effects and changes in energy metabolism in 3T3-L1 cells in a concentration-dependent manner. These studies suggest that chronic cannabinoid exposure improves metabolic function and dysregulated glucose homeostasis in DIO by a mechanism that includes restoring impaired adipoinsular axis function.