Weed and cancer

Cannabis and cancer are discussed in two distinct ways:

• Cancer treatment claims: Dorian Yates recounts claims that cannabis oil cured cancers and that THC affected cancer cells in a laboratory. Those are presented as anecdotes and lab observations—not proof that cannabis treats or cures cancer. 1
• Cancer risk from smoking: Matthew Hill says long-term studies have not shown the same clear association between cannabis smoking and lung cancer seen with cigarette smoking, but emphasizes that this does not establish cannabis as safe: smoking can still damage the lungs, and the reason for the different cancer findings is uncertain. 2
• Bottom line: The material here does not establish cannabis as a cancer cure or show that it prevents cancer. Claims about cancer-cell effects or individual recoveries should not be treated as evidence of an effective cancer therapy.