How might Naltrexone work in cancer?
In summary, based mainly on Zagon’s work, naltrexone at low dose administered nocturnally could bne postulated to work via 1) a stimulation of endogenous opiates as well as the number and density of opiate receptors on tumor cell membranes making them more responsive to the inhibitory effects of circulating opiates, which in turn suppresses tumor growth directly, 2) an enhancement of cellular immunity as a result of effects of higher levels of endogenous opiates, and 3) metabolites such as methylnaltrexone which exert antiangiogenic effects. What does the medical literature say? Bihari had published nothing on LDN and cancer in the medical literature. Zagon had reported on using naltrexone in a mouse neuroblastoma model showing inhibition of growth and prolonged survival in those mice that develop tumors and protected some mice from developing tumors altogether (Brain Res 1989 Feb 20;480(1-2):16-28). At a similar dose of 0.1mg/kg, his team was also able to retard implanted human colon
