Medical Cannabis for Best Supportive Care of Patients Affected by Cancers of the Head and Neck: A Narrative Review.

Cancers of the head and neck, including malignancies of the oral cavity, pharynx, larynx, and salivary glands, are often associated with severe symptoms that negatively impact quality of life. Patients commonly experience pain, nausea, cachexia (severe weight loss), dysphagia (difficulty swallowing), and xerostomia (dry mouth), all of which can be exacerbated by both the disease and its treatments, such as surgery, radiation, and chemotherapy. Research has demonstrated that medical cannabis can be effective in managing symptoms such as chronic pain, nausea, vomiting, and anxiety, making it a valuable option in cancer care. Its ability to interact with the endocannabinoid system to reduce nociception (pain perception) and inflammation makes it particularly suitable for the complex symptom burden of patients with head and neck cancer. This review explores the role of the endocannabinoid system and medical cannabis in mitigating symptoms and improving patient outcomes, as well as its place within the comprehensive care of patients with cancers of the head and neck.