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Marijuana is the accepted term for Cannabis sativa, an herb with medicinal properties that is clinically proven to benefit cancer patients. Mesothelioma symptoms and treatment side effects often decrease a patient’s quality of life. For some patients, medical marijuana can provide relief from these conditions.
Written by Michelle Whitmer • Edited By Walter Pacheco • Medically Reviewed By Tejal Parekh
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Whitmer, M. (2024, February 2). Medical Marijuana and Mesothelioma. Asbestos.com. Retrieved April 19, 2024, from https://www.asbestos.com/treatment/alternative/medical-marijuana/
Whitmer, Michelle. "Medical Marijuana and Mesothelioma." Asbestos.com, 2 Feb 2024, https://www.asbestos.com/treatment/alternative/medical-marijuana/.
Whitmer, Michelle. "Medical Marijuana and Mesothelioma." Asbestos.com. Last modified February 2, 2024. https://www.asbestos.com/treatment/alternative/medical-marijuana/.
Although the sale and use of marijuana as a recreational substance is a federal offense in the U.S., as of June 25, 2019, it is approved in 11 states and the District of Columbia for recreational use and in 33 states for medicinal purposes — particularly for treating pain associated with cancer and for nausea and loss of appetite associated with chemotherapy treatment.
Patients with mesothelioma cope with symptoms of the disease and side effects of cancer treatment such as chest pain and chemotherapy-induced nausea. A number of clinical trials found evidence that medical marijuana may help some patients manage cancer-related symptoms and side effects of cancer treatment.
As with all forms of herbal medicine, patients should consult with their oncologist before using this type of complementary treatment because it may interfere with conventional treatments.
In clinical trials, medical marijuana was found effective for:
Despite its benefits, medical marijuana may also have side effects, including:
Patients report that side effects are generally mild, but vary depending on the strain of marijuana and how much is consumed. Researchers have not reported benefits or side effects of marijuana as a treatment for mesothelioma.
Most of the scientific research on medical marijuana in cancer care has happened outside of the U.S. because marijuana remains illegal at the federal level. Growing support for legalization of medical marijuana may promote cancer research in the future, but current research is limited in the U.S.
Global research efforts have increased in recent years because of a growing interest in the potential role of medical marijuana in cancer care. The research extends beyond the well-known tetrahydrocannabinol chemical, known as THC, to include other compounds, such as CBD, collectively known as cannabinoids.
The research has looked at marijuana not only as a means to control cancer symptoms and treatment side effects, but also as an anti-cancer therapy. Studies in test tubes and in mice indicate that several types of cancer may respond to cannabis as an anti-cancer therapy. Some cancer cells die when exposed to cannabinoids, and some stop spreading.
It appears that certain cancer cells actually have cannabinoid receptors, but the precise function remains largely unknown. There isn’t enough research on how marijuana affects mesothelioma tumor progression.
It also reported that marijuana controlled nausea and vomiting just as well as conventional anti-nausea drugs, and the patients who received both preferred marijuana over anti-nausea drugs. However, patients receiving marijuana were more likely to drop out of the trials because of side effects (such as dizziness or sedation) than patients receiving placebos or anti-nausea drugs.
It is important to note some laboratory research indicates cannabinoids may promote tumor growth in certain cancers. For example, a 2004 test tube study published in Cancer Research found THC promoted the growth of lung cancer and glioblastoma, a type of brain cancer.
A 2005 test tube study published in The Journal of Immunology found THC enhanced the growth and spreading of breast cancer. In 2000, the same journal published a study on mice with lung cancer and found THC accelerated tumor growth by limiting parts of the immune system that control cancer.
Further research in humans is required to fully understand how the chemicals in marijuana affect different types of cancer.
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Patients with mesothelioma or lung cancer have weakened lungs and experience trouble breathing. For these patients, consuming edible marijuana may be preferable to smoking it to avoid aggravation of lung tissues.
There are some differences between smoked and edible marijuana:
Edible medical marijuana comes in a variety of types:
For patients who are watching calories, fat or sugar, there are alternatives to heavy baked goods:
For patients who don’t prefer edibles, topical marijuana products are becoming more widely available:
Since marijuana is not readily available to many patients, drug companies have developed synthetic versions of THC, the psychoactive ingredient in marijuana.
Patients who have tried synthetic and natural versions of marijuana often say marijuana in its natural form is more effective for symptom relief than the synthetic variety. Marinol and Cesamet can also have serious side effects that aren’t a risk with natural THC, including seizures, irregular heartbeat, vision changes, headaches and severe or persistent dizziness.
Regulations on marijuana began in the early 1900s.
Various pieces of legislation affected the regulation and criminalization of marijuana such as:
In 1970, the Controlled Substances Act classified marijuana as a Schedule I substance having “no accepted medical use.”
The country’s attitude toward medical marijuana began to shift in the late 1970s. In 1978, the National Institute on Drug Abuse (NIDA) supplied seven patients with marijuana after their physicians applied for the Expanded Access (compassionate use) program.
In 1991, 53% of oncologists agreed that marijuana should be available by prescription and 66% said it helped cancer patients treat the side effects of chemotherapy.
The New England Journal of Medicine published an editorial calling for the rescheduling of marijuana in 1997, and in 2008 the American College of Physicians stated that it supported non-smoked THC. The organization also called for exemption from criminal prosecution for patients.
After California legalized the drug in 1996, other states followed. Presently, 33 states, the District of Columbia, Guam, Puerto Rico and the U.S. Virgin Islands have legalized medical marijuana.
Recreational marijuana became legal to purchase in Colorado and Washington in 2014. Since then, a total of 11 states and one territory have approved recreational marijuana.
State | possession Limit |
---|---|
Alaska | 1 oz usable; 6 plants (3 mature, 3 immature) |
Arizona | 2.5 oz usable; 12 plants |
Arkansas | 2.5 oz usable per 14-day period |
California | 8 oz usable; 6 mature or 12 immature plants |
Colorado | 2 oz usable; 6 plants (3 mature, 3 immature) |
Connecticut | 2.5 oz usable |
District of Columbia | 2 oz useable; 6 plants (3 mature, 3 immature) |
Delaware | 6 oz usable |
Florida | 35-day supply (amount not specified) |
Hawaii | 4 oz usable; 10 plants |
Illinois | 2.5 oz of usable cannabis during a 14-day period |
Maine | 2.5 oz usable; 6 plants |
Maryland | 30-day supply; no more than 120 grams (approximately 4 oz) |
Massachusetts | 60-day supply (10 oz) |
Michigan | 2.5 oz usable; 12 plants |
Minnesota | 30-day supply of non-smokable marijuana |
Montana | 1 oz usable; 4 plants (mature); 12 seedlings |
Nevada | 2.5 oz usable; 12 plants |
New Hampshire | 2 oz of usable cannabis during a 10-day period |
New Jersey | 2 oz usable |
New Mexico | 6 oz usable; 16 plants (4 mature, 12 immature) |
New York | 30-day supply of non-smokable marijuana |
North Dakota | 3 oz per 14-day period |
Ohio | Maximum of a 90-day supply; amount to be determined |
Oregon (only state to accept out-of-state applications) | 24 oz usable; 24 plants (6 mature, 18 immature) |
Pennsylvania | 30-day supply |
Rhode Island | 2.5 oz usable; 12 plants |
Utah | 113 grams of unprocessed cannabis |
Vermont | 2 oz usable; 9 plants (2 mature, 7 immature) |
Washington | 8 oz usable; 6 plants |
West Virginia | 30-day supply |
If you live in a state that offers medical marijuana, ask your oncologist how it might benefit or interfere with your treatment plan. People assume it couldn’t hurt to take a natural substance, but cannabis products contain antioxidants that may protect cancer cells from the wanted effects of chemotherapy and radiation therapy.
This means certain types of medical marijuana might have the potential to block your anti-cancer treatments from working properly. Your oncologist is your best resource for guidance on this matter.
A number of mesothelioma survivors have said they spoke with their doctor before using medical marijuana as a complementary therapy to conventional treatment, which is known as integrative oncology.
While research shows medical marijuana may help cancer patients cope with pain, nausea, anxiety, lack of appetite and insomnia, it is best to discuss how you want to use marijuana with your doctor to get their approval first and make sure you take the right product, at the right time, without interfering with your treatment plan.
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