NY Times Addiction Article Reports an Important Study
Ignore the left wing, big government, redistributionist propaganda. However, this study is important. Environment can alter dopamine levels in both directions.
Michael Nader at the Wake Forest School of Medicine showed this in a study of monkeys and cocaine. When monkeys are moved from an individual cage and housed in a group, some become dominant and others assume a submissive role. For those that become dominant — meaning they get more attention, more grooming and more access to food and treats — this is a positive change. They now have more D2 dopamine receptors and are less interested in self-administering cocaine. But for submissive animals, the group setting is a stressful change, and they respond by increasing their use of cocaine.
Strikingly, the effect of environment is easily reversible: Stress the dominant monkey by returning it to a solo cage and its D2 receptors will drop — and its taste for cocaine will increase. In other words, simply by changing the environment, you can increase or decrease the likelihood of an animal becoming a drug addict.