HOME >> MEDICINE >> NEWS
Smoking affects same 'feel good' brain chemical system as heroin

SAN DIEGO -- Smokers often say that lighting up a cigarette can calm their nerves, satisfy their craving and help them relax.

Now, a team of University of Michigan scientists is reporting new evidence of why that might be: Smoking produces major changes in the flow of "feel good" chemicals between brain cells, both temporarily and long-term. And those changes in flow match up with changes in how smokers say they feel before and after smoking.

It's the first time smoking has been shown to affect the human brain's natural system of chemicals called endogenous 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 lecture at the annual meeting of the Society for Neuroscience.

The new results come from a pilot study involving a small group of young male pack-a-day smokers and non-smoking comparison subjects. Despite their study's small size, the researchers say the surprisingly large effect on opioid levels they found suggests a promising road for further discovery. That may lead to better understanding of why smoking affects people the way it does -- including the mystery of why it's often so hard to quit, despite tobacco's many health dangers.

"It appears that smokers have an altered opioid flow all the time, when compared with non-smokers, and that smoking a cigarette further alters that flow by 20 to 30 percent in regions of the brain important to emotions and craving," says David J. Scott, a graduate student in the U-M Neuroscience Program who will present the results. "This change in flow as seen on a brain scan correlated with changes in how the smokers themselves reported feeling before and after smoking."

Scott and his colleagues made the findings using a type of brain scanni
'"/>

Contact: Kara Gavin
kegavin@umich.edu
734-764-2220
University of Michigan Health System
26-Oct-2004


Page: 1 2 3 4 5

Related medicine news :

1. Smoking hurts wealth as well as health, study suggests
2. Smoking causes cognitive impairment in adolescents
3. Smoking not linked to hearing loss
4. Smoking triggers early onset of pancreatic cancer
5. Smoking cessation can improve survival among patients with severe COPD
6. Smoking increases risk of colon polyps
7. Smoking and the risk of rheumatoid arthritis
8. Smoking increases papillomavirus risk in HIV-infected women
9. Smoking linked to more than 60 percent of overall cancer death burden in black men
10. Smoking linked to accelerated cognitive decline in the elderly
11. Smoking linked to blindness

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/31/2020)... N.J. (PRWEB) , ... August 31, 2020 , ... ... leading cloud-based business management solution for chiropractors, announced today the launch of its ... healthcare professionals can start running their virtual practice in under 90 seconds. ...
(Date:8/31/2020)... (PRWEB) , ... August 31, 2020 , ... ... business support services to dental groups in the United States, today announced the ... community of Beaumont, CA. , Patients will enjoy convenient hours, a comfortable ...
(Date:8/31/2020)... ... August 31, 2020 , ... A Cure for Covid-19 “PTS” with Mediation & Hypnosis ... planet are in a state of panic, experiencing deep anxiety, immense stress, and right now ... solution is timely when most people on the planet are experiencing a great degree of ...
(Date:8/31/2020)... Calif. (PRWEB) , ... August 31, 2020 , ... ... leadership experience working, both directly with persons with autism and other developmental disabilities, ... expertise includes early intervention, parent education, adolescents with autism, school consultation, and staff ...
(Date:8/29/2020)... ... August 29, 2020 , ... When professor and author ... greater ease than most people would. Rather than become melancholic, however, he put together ... on achieving one’s dreams. Randy Pausch took a negative situation and turned it into ...
Breaking Medicine News(10 mins):
(Date:8/31/2020)... (PRWEB) , ... August 31, 2020 , ... ... research and advisory guide, has named Cloudticity a Gold winner in the 15th ... industry and peer recogniti o ns from Network Products Guide honoring ...
(Date:8/27/2020)... (PRWEB) , ... August 27, 2020 , ... Austin Oral ... – is pleased to announce Dr. David Szalay, DDS, MD, has joined the practice. ... patients in the new Pflugerville office, which is scheduled to open this fall. The ...
(Date:8/27/2020)... ... , ... The GHT Companies , a leading developer and distributor of ... Diego with a press conference at its manufacturing facility in Vista. Here ... representing an overall donation result exceeding $30,000 to Feeding San Diego, Who: Jim ...
Breaking Medicine Technology:
Cached News: