NEW YORK, May 4, 2007

Heavy Drinkers: Smaller Brains?

Study Suggests Brains Of People Who Consume A Lot Of Alcohol Shrink

  • Dr. Robert Millman and <b>Hannah Storm</b> on <i><b>The Early Show</i></b> Friday Photo

    Dr. Robert Millman and Hannah Storm on The Early Show Friday  (CBS/The Early Show)

  • Interactive Substance Abuse In America

    Get the facts on a national problem. Find out where to get help, learn how drugs affect the body and compare state drunk-driving laws.

(CBS)  A new study indicates that the brains of people who drink large amounts of alcohol get smaller.

Psychiatrist and substance abuse expert Dr. Robert Millman says that doesn't surprise him in the least.

Millman, who's with New York Presbyterian Hospital / Weill Cornell Medical Center, says it makes complete sense, considering how much of a poison alcohol is. People recovering from alcoholism can take six months to a year to fully regain their cognitive abilities, such as memory and ability to do abstract thinking. So, it follows that alcohol has a physical impact on the brain.

"According to this study of 1,800 people, which is a lot," Millman told co-anchor Hannah Storm on The Early Show Friday, "fourteen drinks a week was classified as a lot of drinking. … When you think about it, 14 drinks a week is not so much for a lot of people."

A drink was classified as a glass of wine, a bottle of beer, or an ounce-and-a-half of vodka.

The researchers discovered that the brains of people who drink a lot were more than 1.5 percent smaller than people who don't drink.

"It's been known for years, or thought for years," Millman remarked, "that, if you drank a lot, your brain shrunk. You would get some sort of atrophy of the brain. But it's never been shown in this kind of a systemic way. And it's never been with this many people. This is actually a remarkable study, showing that the more you drink, the more your brain shrinks, up to about 1.6 percent, which isn't huge, but it's significant."

One observation in the study was that women's brains appeared to shrink more markedly than men's.

Again, that's no surprise to Millman. He notes that men are bigger, and earlier research found that women's bodies contain far less of an enzyme that metabolizes alcohol. Women only have 25 percent as much of it as men. So, alcohol in its most poisonous form is more likely to linger in a woman's body. Also, men have more water in their bodies than women, making men more capable of diluting alcohol.

Women handle alcohol worse than men in numerous ways. Among them: They react more intensely to the alcohol they consume, and are less able to predict the effects of what they're about to drink. So, it follows that the same amount of drinking would affect a woman's brain more than a man's.

The apparent effect on the brain is just more evidence of how poisonous alcohol is, Millman stresses. It hurts all parts of our bodies. It's well-known that alcohol affects the liver. It also can damage the heart and intestinal lining, and aggravate existing illnesses such as diabetes. And that's not to mention its role in accidents and psychological illnesses.

True, Millman continued, in very moderate amounts, alcohol is found to improve cardiac health. But in larger amounts, it is poison.

So how much alcohol might actually be good for you?

"A little," Millman responded to Storm. "One or two drinks a night, but not every night. The big danger is to drink every day without a break, and more than three drinks a day."

This study comes out just four months after another one found that when people stop drinking, their brains appear to grow. That, says Millman, is an interesting observation in that it provides hope of an ability to recover, and an incentive for people now drinking heavily to stop, though it's far from certain that any recovery they enjoy would be complete.

That research, Millman told Storm, showed "that maybe you're not knocking off parts of the brain, that it's just weakening."

© MMVII, CBS Interactive Inc. All Rights Reserved.

Video and Galleries from Health

Add a Comment See all 12 Comments
by honestabe8 May 4, 2007 10:34 AM PDT
Drug Free America, my arse
Reply to this comment
by rushman71 May 4, 2007 11:44 AM PDT
Ohhhh, so us guys drinking a 12 pack each day will end up having our brains the size of a nut in about 30 years. Ok, time to stock up on some brewski!!!! Cheers!!!!!
Reply to this comment
by zoltaric May 4, 2007 12:13 PM PDT
Save your brain. Smoke weed.
Reply to this comment
by jjp735i May 4, 2007 12:24 PM PDT
That explains a lot about President Bush.


ps, CBS please remove those ads that collapes. They make the page scroll as your reading if you forget or are moving back and forth between pages. The ad type is really bad for readers.
Reply to this comment
by harp1963 May 4, 2007 1:04 PM PDT
There must be a lot of people with small brains.
Reply to this comment
by infidel_us May 4, 2007 1:17 PM PDT
Hey, Teddy Kennedy.....they finally figured you out!
Reply to this comment
by rsoxfan1123 May 4, 2007 1:19 PM PDT
That explains the bush voters then.
Reply to this comment
by jetlizhan May 4, 2007 1:56 PM PDT
i don't know about this. i've learned not to believe everything i read. hell, if this were true, me and my circle of friends from 30 yrs ago (and even today)rightfully do not even have a brain.
Reply to this comment
by condumism May 4, 2007 2:00 PM PDT
The GOP "War on Drugs" fails because it is seldom includes alcohol or tobacco as being drugs at all. There's plenty of proof out there that marijuana is far less dangerous to the user than Corporate America and GOPigs drugs of choice: booze or cigs. It's time to hold all corporations accoutable for this scam, not just the Southern scum that produce alcohol or cigs.
Reply to this comment
by incog-nito May 4, 2007 2:10 PM PDT
That's just not true! I've been drinking for the past 30 years and... What are we talking about again?
Reply to this comment
by killtheliars May 4, 2007 2:48 PM PDT
I am a college grad and work in a white collar industry, so I am around some pretty intelligent people on a daily basis. I know a few older drunks who are some of the smartest people i know.
I think the problem may be that the media only releases study findings that support the official government policy. For example a few weeks ago they were running a story saying pot alters brina function. Then they cite a study that only looked at 150 people. They never gave a background on these people so you don't know how well their brains functioned before smoking pot. in addition you did not know if they used other drugs.
I looked on www.marijuanafacts.org and it stated that no study has ever proven a link between pot and abnormal brain function.
You cannot believe anything you read in the media anymore. It is all part of an agenda.
Reply to this comment
by jetlizhan May 4, 2007 3:30 PM PDT
killtheliars -
one of the funniest post names i've seen here.
Reply to this comment
See all 12 Comments
  • MOST POPULAR
  • Viewed
  • Commented
Latest News
Featured Blogs