“Humans have been using these plants for thousands of years so we have quite a lot of experience of the chemicals in the plants.”  Although cannabis is an illegal drug, GW Pharmaceuticals has been granted a license to grow the plant in specially constructed greenhouses on a secret facility in the south of England.  It produces cannabis plants that have been bred to express different quantities of compounds known as cannabinoids. They are already developing drugs that can be used to treat multiple sclerosis and epilepsy.  Details of their research featured in the Society of Biology's journal the Biologist.  Although cannabis is better known for inducing hunger in those who smoke it, known as the munchies. when the scientists examined two compounds, called THCV and cannabidiol, they were found to have an appetite suppressing effect.  This effect only lasts for a short time, however. When the scientists looked closer, they found the compounds also had an impact on the level of fat in the body and its response to insulin, a hormone that controls the sugar levels in the blood.  Tests in mice showed the compounds boosted the animals metabolism, leading to lower levels of fat in their livers and reduced cholesterol in their blood stream.  THCV was also found to increase the animals sensitivity to insulin while also protecting the cells that produce insulin, allowing them to work better and for longer.  It has raised hopes that the drugs can be developed into treatments for obesity related diseases and type 2 diabetes.  Professor Mike Cawthorne, director of metabolic research at the University of Buckingham who has been conducting the animal studies, said: “Overall, it seems these molecules increase energy expenditure in the cells of the body by increasing the metabolism.”
Cannabis plants could provide a new treatment for obese patients at risk of   diabetes and cardiovascular disease.