For many people, the drug Naltrexone is an instant cure for alcohol cravings. It is available cheap as a 1-pill-per-day generic drug or as an expensive 1-injection-per-month specialty drug. If you or someone you know is an alcoholic, check it out. It is an opioid receptor antagonist. Its effectiveness depends on whether you have a specific expression of an opioid receptor gene. For some people, it works instantly and there is zero craving. For other people, it is less effective or does not work at all. It appears to work for most American Indians, Asians (60-70%), some whites (30%), and...