Symptom Relief: Nausea, Pain & Appetite
Cannabis is most widely recognized for alleviating common cancer treatment side effects:
Nausea & Vomiting: Cannabinoids like THC and CBD interact with the body’s endocannabinoid system to regulate nausea. The National Cancer Institute reports strong evidence that cannabis is effective in treating chemotherapy-induced nausea and vomiting.
Appetite Stimulation: A randomized controlled trial published in Annals of Oncology found that 64% of advanced cancer patients treated with THC reported increased appetite, compared to 30% in the placebo group.
Pain Reduction: In a systematic review analyzing 18 randomized, placebo-controlled trials and 7 cohort studies (encompassing a total of 14,835 patients with chronic pain), researchers found that oral, synthetic cannabis products with high THC-to-CBD ratios and sublingual, extracted cannabis products with comparable THC-to-CBD ratios may be associated with short-term improvements in chronic pain.
Sleep & Anxiety: Cannabis may also help with insomnia and anxiety – two common struggles for cancer patients. A 2022 study in Frontiers in Pain Research showed that medical marijuana improved overall sleep and mental health outcomes.
Can Cannabis Slow Tumor Growth?
In addition to symptom relief, early studies suggest cannabinoids may interfere with cancer cell growth. While more human research is needed, the following lab and animal studies are promising:
A landmark study in Nature Reviews Cancer described how cannabinoids may inhibit tumor growth, induce cell death (apoptosis), and block blood vessel formation (angiogenesis).
A pilot clinical study published in the British Journal of Cancer found that intratumoral THC administration in glioblastoma patients reduced tumor cell proliferation in most cases, without toxic side effects.
Cannabinoids may also suppress metastasis. A 2007 study in Molecular Cancer Therapeutics demonstrated that CBD significantly downregulated Id-1 expression in aggressive human breast cancer cells, leading to reduced tumor aggressiveness. The findings suggest that CBD may serve as a novel therapeutic agent for the treatment of aggressive breast cancer.
In pancreatic cancer models, a 2019 Frontiers in Oncology study reported that cannabis compounds enhanced the anti-tumor effects of chemotherapy and prolonged survival in mice.
How Does Marijuana Fight Cancer?
Cannabinoids work through multiple mechanisms that make them uniquely suited for cancer therapy:
Apoptosis (Cancer Cell Death): Researchers with the British Journal of Cancer demonstrated that intratumoral administration of delta-9-tetrahydrocannabinol (THC) in patients with recurrent glioblastoma multiforme led to a reduction in tumor cell proliferation without toxic side effects. These findings suggest that THC, through activation of cannabinoid receptors, may induce apoptosis in cancerous tissues.
Angiogenesis Inhibition: Tumors rely on new blood vessels to grow. Cannabinoids have been shown to block this process, effectively starving tumors of nutrients, according to preclinical data in Journal of Clinical Investigation.
Reduced Invasion & Metastasis: CBD downregulates pro-metastatic genes like Id-1, which play a role in cancer cell migration. This was illustrated in a 2007 Molecular Cancer Therapeutics study.
Chemotherapy Support: Cannabis may enhance traditional therapies. A Frontiers in Oncology study of pancreatic cancer found that cannabinoids helped improve response to chemotherapy while extending survival in animal models.
IS CANNABIS SAFE?
Compared to many chemotherapy drugs, cannabis has a relatively mild side effect profile. Reported side effects include dizziness, dry mouth, fatigue, and short-term memory issues — most of which are dose-dependent and temporary.
Importantly, a growing body of literature reports that cannabis is well-tolerated. For instance, a 2023 study found that medical cannabis use was associated with a reduction in opioid consumption and healthcare service use, suggesting improvements in pain management and overall patient well-being. The study also reported that no significant adverse effects observed.
How Does Marijuana Compare To Other Medications?
Cannabis is not a replacement for traditional cancer therapies – but it may serve as a powerful adjunct. Unlike chemotherapy, which targets rapidly dividing cells (cancerous or not), cannabis appears to act more selectively. It also improves quality of life in ways most cancer drugs can’t: easing appetite loss, insomnia, anxiety, and pain without heavy sedation. In some cases, cannabinoids may even help reduce reliance on opioids – lowering the risk of tolerance, dependence, and overdose.
While cannabis is not a standalone cure for cancer, science increasingly supports its role as a multi-faceted therapeutic tool. From reducing pain and nausea to potentially interfering with cancer growth itself, cannabinoids offer hope – and relief! – to many facing a cancer diagnosis.
As research advances, medical marijuana is becoming an increasingly mainstream part of comprehensive cancer care.
Accessing Legal Cannabis
In Florida, cancer is a qualifying condition for medical marijuana use. Patients can obtain legal access by receiving a recommendation from a qualified physician and registering with the state’s Medical Marijuana Use Registry. CannaMD physicians are available to assist patients through this process from start to finish. To get started, call (855) 420-9170 or fill out a quick online application.