Medical marijuana studies have shown a reduction in tumor growth as well as a reduction in cancerous lesions. 53 With so many consumption methods available, the harmful effects of smoking are not a concern to those with lung cancer.
53 Preet, A., Ganju, R.K., & Groopman, J.E. (2008). Δ9-Tetrahydrocannabinol inhibits epithelial growth factor-induced lung cancer cell migration in vitro as well as its growth and metastasis in vivo. Oncogene, 27, 339-346. doi:10.1038/sj.onc.1210641