Current consumers of cannabis are 50 percent less likely to suffer from metabolic syndrome as compared to those who have never used the substance, according to findings published online ahead of print in The American Journal of Medicine. Metabolic syndrome is a group of risk factors, including high blood pressure, high blood sugar, unhealthy cholesterol levels, and abdominal fat, which are linked to increased risk of heart disease and/or type 2 diabetes, among other serious health consequences.
Investigators from the University of Miami Leonard M. Miller School of Medicine analyzed the association between cannabis use and metabolic syndrome in a cohort of nearly 8,500 subjects aged 20 to 59 who participated in the 2005-2010 National Health and Nutrition Examination Surveys. Researchers classified subjects as suffering from metabolic syndrome if they possessed more than three of the following symptoms: elevated fasting glucose levels, high triglycerides, low HDL cholesterol, elevated systolic/diastolic blood pressure, and increased waist circumference.
Among subjects with no history of cannabis use, 19.5 percent met the criteria for metabolic syndrome. By contrast, 17.5 percent of former users and only 13.8 percent of current users met the criteria.
“Among emerging adults, current marijuana users were 54 percent less likely than never users to present with metabolic syndrome,” investigators reported. Specifically, mean fasting glucose levels were significantly lower among current marijuana users when compared to never users, while waist circumference was significantly lower among males who reported current marijuana use when compared to those with no cannabis use history.
“These findings have important implications for the nation as marijuana use becomes more accepted and we simultaneously face multiple epidemics of obesity, cardiovascular disease and diabetes,” authors concluded.
The findings are consistent with those of previous observational studies showing an inverse relationship between cannabis use and diabetic markers, and support previous population data showing that those who use cannabis typically possess smaller waist circumference and lower body mass index than those who do not.
An abstract of the study, “Metabolic Syndrome among Marijuana Users in the United States: An Analysis of National Health and Nutrition Examination Survey Data,” is online here.
A history of cannabis use is associated with a lower likelihood of obesity and diabetes, according to population-based data published in the journal Obesity.
Investigators from the Conference of Quebec University Health Centers assessed cannabis use patterns and body mass index (BMI) in a cohort of 786 Inuit (Arctic aboriginal) adults ages 18 to 74. Researchers reported that subjects who consumed cannabis in the past year were more likely to possess a lower BMI, lower fasting insulin, and lower HOMA-IR (insulin resistance) as compared to those who did not use the substance.
Specifically, researchers reported that cannabis users possessed an average BMI of 26.8 compared to an index of 28.6 for non-users, after controlling for age, gender and other factors. Those subjects who reported using cannabis but never having used tobacco, or who were former users of tobacco, possessed on average the lowest BMI.
Authors concluded: “In this large cross-sectional adult survey with high prevalence of both substance use and obesity, cannabis use in the past year was associated with lower BMI, lower percentage fat mass, lower fasting insulin, and HOMA-IR. … The inverse association observed in our work supports evidence from a larger proportion of previous cross-sectional and follow-up investigations. … As a result, cannabinoids from cannabis may be viewed as an interesting avenue for research on obesity and associated conditions.”
Observational trial data published in 2013 in the American Journal of Medicine reported that subjects who consumed cannabis possessed favorable indices related to diabetic control compared to those without a history of recent marijuana use. Separate observational trial data published in 2012 in the British Medical Journal reported that marijuana users had a lower prevalence of type 2 diabetes and possessed a lower risk of contracting the disease than did those with no history of cannabis consumption, even after researchers adjusted for social variables such as subjects’ ethnicity, family history, and levels of physical activity.
Cross-sectional data published in 2011 in the American Journal of Epidemiology similarly reported that the prevalence of obesity in the general population is sharply lower among marijuana consumers than it is among nonusers.
Vaporized cannabis mitigates pain intensity in diabetic subjects in a dose-dependent manner, according to clinical trial data published online ahead of print in The Journal of Pain.
Investigators at the University of California, San Diego assessed the efficacy of inhaled cannabis versus placebo in 16 patients with painful diabetic peripheral neuropathy (DPN).
Authors reported: “This small, short-term, placebo-controlled trial of inhaled cannabis demonstrated a dose-dependent reduction in diabetic peripheral neuropathy pain in patients with treatment-refractory pain. … Overall, our finding of an analgesic effect of cannabis is consistent with other trials of cannabis in diverse neuropathic pain syndromes.”
A series of clinical trials conducted by investigators affiliated with the Center for Medicinal Cannabis Research at the University of California, San Diego previously reported that the inhalation of whole-plant cannabis is efficacious in the treatment of various types of treatment-resistant neuropathic pain, including HIV-associated neuropathy and spinal cord injury. According to the findings of a 2014 clinical trial published in the Journal of Pain and Palliative Care Pharmacotherapy, “At least 10 randomized controlled trials, lasting for more than 1000 patients, have demonstrated efficacy of different types of cannabinoids for diverse forms of neuropathic pain.”
An abstract of the study, “Efficacy of inhaled cannabis on painful diabetic neuropathy,” appears online here.
Preclinical study data published online in the scientific journal Nutrition & Diabetes reports that tetrahydrocannabivarin (THCV) — a naturally occurring analogue of THC — possesses positive metabolic effects in animal models of obesity.
British researchers assessed the effects of THCV administration on dietary-induced and genetically modified obese mice. Authors reported that although THCV administration did not significantly affect food intake or body weight gain in any of the models, it did produce several metabolically beneficial effects, including reduced glucose intolerance, improved glucose tolerance, improved liver triglyceride levels, and increased insulin sensitivity.
Researchers concluded: “Based on these data, it can be suggested that THCV may be useful for the treatment of the metabolic syndrome and/or type 2 diabetes (adult onset diabetes), either alone or in combination with existing treatments. Given the reported benefits of another non-THC cannabinoid, CBD in type 1 diabetes, a CBD/THCV combination may be beneficial for different types of diabetes mellitus.”
Last month, Harvard Medical School researchers published observational data in The American Journal of Medicine reporting that subjects who regularly consume cannabis possess favorable indices related to diabetic control as compared to occasional consumers or non-users of the substance. Writing in an accompanying commentary, the journal’s Editor-in-Chief stated: “These are indeed remarkable observations that are supported, as the authors note, by basic science experiments that came to similar conclusions. … I would like to call on the NIH and the DEA to collaborate in developing policies to implement solid scientific investigations that would lead to information assisting physicians in the proper use and prescription of THC in its synthetic or herbal form.”
Observational trial data published in 2012 in the British Medical Journal previously reported that adults with a history of marijuana use had a lower prevalence of type 2 diabetes and possess a lower risk of contracting the disease than did those with no history of cannabis consumption, even after researchers adjusted for social variables such as subjects’ ethnicity and levels of physical activity.
Full text of the study, “The cannabinoid ?9-tetrahydrocannabivarin (THCV) ameliorates insulin sensitivity in two mouse models of obesity,” is available online here.
Subjects who regularly consume cannabis possess favorable indices related to diabetic control as compared to occasional consumers or non-users, according to trial data published today online in the American Journal of Medicine.
Here is a summary of the study from the website diabetes.co.uk:
A new study has revealed that smoking cannabis may help protect against type 2 diabetes after researchers in the US found that regular users of the drug have better blood sugar control.
Murray Mittleman, of the Cardiovascular Epidemiology Research Unit at the Beth Israel Deaconess Medical Centre in Boston, analysed data on almost 5,000 patients who were quizzed about their use of recreational drugs as part of the National Health and Nutrition Survey between 2005 and 2010.
They found that 2,103 had never use cannabis, 975 had used the drug in the past but were not current users, and 579 (over 10%) had inhaled or ingested it in the past month.
Tests showed that current users had 16% lower fasting insulin levels and reduced insulin resistance than those who had never used cannabis. Non-users also had larger waistlines and lower levels of high-density lipoprotein (HDL or ‘good’) cholesterol – both of which are risk factors for type 2 diabetes.
The same benefits were seen among participants who had used the drug in the past but the associations were not as strong, indicating that the effects of cannabis use on insulin levels and insulin sensitivity wear off over time.
“Previous epidemiologic studies have found lower prevalence rates of obesity and diabetes mellitus in marijuana users compared to people who have never used marijuana, suggesting a relationship between cannabinoids and peripheral metabolic processes, but ours is the first to investigate the relationship between marijuana use and fasting insulin, glucose, and insulin resistance,” said lead investigator Mittleman.
Commenting on the study, American Journal of Medicine Editor-in-Chief Joseph S. Alpert, MD, Professor of Medicine at the University of Arizona College of Medicine, Tucson, wrote in an accompanying commentary: “These are indeed remarkable observations that are supported, as the authors note, by basic science experiments that came to similar conclusions.” He added: “We desperately need a great deal more basic and clinical research into the short- and long-term effects of marijuana in a variety of clinical settings such as cancer, diabetes, and frailty of the elderly. I would like to call on the NIH and the DEA to collaborate in developing policies to implement solid scientific investigations that would lead to information assisting physicians in the proper use and prescription of THC in its synthetic or herbal form.”
Diabetes mellitus is a group of autoimmune diseases characterized by defects in insulin secretion resulting in hyperglycemia (an abnormally high concentration of glucose in the blood). There are two primary types of diabetes. Individuals diagnosed with type 1 diabetes (also known as juvenile diabetes) are incapable of producing pancreatic insulin and must rely on insulin medication for survival. Individuals diagnosed with type 2 diabetes (also known as adult onset diabetes) produce inadequate amounts of insulin. Type 2 diabetes is a less serious condition that typically is controlled by diet. Over time, diabetes can lead to blindness, kidney failure, nerve damage, hardening of the arteries and death. The disease is the third leading cause of death in the United States after heart disease and cancer.
Observational trial data published in 2012 in the British Medical Journal previously reported that adults with a history of marijuana use had a lower prevalence of type 2 diabetes and possess a lower risk of contracting the disease than do those with no history of cannabis consumption, even after researchers adjusted for social variables (ethnicity, level of physical activity, etc.) Investigators concluded, “Our analysis of adults aged 20-59 years … showed that participants who used marijuana had a lower prevalence of DM (Diabetes Mellitus) and lower odds of DM relative to non-marijuana users.”
Although subjects who consume marijuana on average have higher average caloric intake levels than non-users, the plant’s use has been associated with lower body-mass index (BMI) and lower rates of obesity.
Abstracts of today’s study, “The Impact of Marijuana Use on Glucose, Insulin, and Insulin Resistance among US Adults,” are online here. NORML has additional information and citations regarding cannabis and diabetes in our Library here.