Study supports new theory for nicotine's protective effect against neurodegenerative disorders
...e brain through another, more indirect route -- by quelling the hyperactivity of immune cells (microglia) that have turned against the brain. In the normal, healthy brain microglia support and maintain neurons. They also help wipe up excess beta amyloid protein that accumulates in the brain with aging...Smoking affects same 'feel good' brain chemical system as heroin
...ogenous opioids, which are known to play a role in quelling painful sensations, heightening positive emotions, and creating a sense of reward. It's the same system that is stimulated by heroin and morphine. The research team, from the U-M Medical School, will present the results Tuesday afternoon in a lectur...