Navigation Links
More Evidence That Alcohol Hinders Good Sleep

MONDAY, Aug. 15 (HealthDay News) -- You might want to take a pass on that nightcap, a new study suggests.

Japanese researchers report that alcohol hinders the restorative functions of sleep.

The findings, from a study of 10 male university students, appear online and in the November print issue of the journal Alcoholism: Clinical & Experimental Research.

Booze's effect on sleep appears linked to a disruption in nervous system function.

Normally, as people sleep through the night, "the parasympathetic nervous system, responsible for 'rest-and-digest' activities, is dominant over the sympathetic nervous system, responsible for stimulating activities," Yohei Sagawa, a physician in the department of neuropsychiatry at the Akita University School of Medicine, explained in a journal news release. "We wanted to investigate how alcohol may change this complementary relationship."

To do so, Sagawa and his colleagues gave study volunteers different levels of alcohol -- 0 grams (control group), 0.5 grams (low dose), and 1.0 grams (high dose) -- before the participants went to bed on three separate occasions.

Using electrocardiograms, the researchers then focused on the relationship between the volunteers' heart rate variability and their sleep. The team found that alcohol increased heart rate and interfered with the restorative functions of sleep -- and the more alcohol the participants drank, the greater the effect.

"Although the first half of sleep after alcohol intake looks good on the EEG, the result of the assessment regarding the autonomic nerve system shows that drinking leads to insomnia rather than good sleep," Sagawa said.

The effect on habitual drinkers might be even worse, a study co-author said.

"The current study evaluates the acute effects after only a single dose of alcohol intake, and subsequently found a negative health consequence," Seiji Nishino, director of the Sleep & Circadian Neurobiology Laboratory at Stanford University School of Medicine in La Jolla, Calif., said in the news release. "Many subjects habitually drink alcohol, and if the reduction of parasympathetic nerve activity during sleep chronically occurred, negative health consequences may be much larger and may induce various diseases."

"It is generally believed that having a nightcap may aid sleep, especially sleep initiation," Nishino added. "This may be true for some people who have small amounts of alcohol intake. However, it should be noted that large amounts of alcohol intake interfere with sleep quality and the restorative role of sleep."

More information

The U.S. Centers for Disease Control and Prevention has more about sleep and sleep disorders.

-- Robert Preidt

SOURCE: Alcoholism: Clinical & Experimental Research, news release, Aug. 15, 2011

Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. More Evidence Tanning Beds May Be Addictive
2. More Evidence That Exercise May Keep The Brain Sharp
3. Study shows new evidence of age-related decline in the brains master circadian clock
4. More Evidence That Early Treatment Can Stop HIVs Spread to Partners
5. More Evidence CT Scans Better at Detecting Lung Cancer
6. Little Evidence That Diet, Lifestyle Cuts Alzheimers Risk
7. Strong evidence supports prognostic value of circulating tumor cells in breast cancer
8. ASTRO publishes evidence-based guideline for thoracic radiotherapy
9. Evidence-Based Heart Attack Care Reduces Deaths: Study
10. New evidence that chronic ulcerative stomatitis is an autoimmune disease
11. Evidence Weak to Support Many Medications for Autism: Study
Post Your Comments:
Related Image:
More Evidence That Alcohol Hinders Good Sleep
(Date:11/25/2015)... ... 25, 2015 , ... The holiday season is jam-packed with ... palates of attendees is of the utmost importance. Whether you are cooking at ... these recipes a try this holiday season. , Turkey Croquettes , ...
(Date:11/25/2015)... ... November 25, 2015 , ... Dr. John Pierce, Medical Director at the Ageless ... treatment with the Capillus272™ Pro laser therapy cap. FDA cleared for safety and efficacy, ... without the need for surgery, prescription pills, or topical foams. , “Capillus272™ Pro ...
(Date:11/25/2015)... ... 2015 , ... According to an article published November 10th by ... heralded as a breakthrough for performing hernia repairs. The article explains that the biggest ... that it can greatly reduce the pain that a patient might otherwise experience after ...
(Date:11/25/2015)... (PRWEB) , ... November 25, 2015 , ... ... for physicians and athletic programs, launches new Wimbledon Athletics Facebook page ... testing young athletes for unsuspected cardiac abnormalities. About 2,000 people under the age ...
(Date:11/25/2015)... ... November 25, 2015 , ... SCOTTSDALE, AZ) - Today, ... specializing in both surgical and non-surgical treatments, announced the expansion of his private ... Plastic Surgery. , Highly trained and nationally recognized for his natural approach, ...
Breaking Medicine News(10 mins):
(Date:11/26/2015)... 2015 --> ... potential att använda SyMRI för att hitta ... patienter med multipel skleros (MS) eller hjärntumörmetastaser ... AB för att kunna använda SyMRI Research ... SyMRI kan man generera flera konstrastbilder från ...
(Date:11/26/2015)... -- ) has announced the ... Viscosity Drugs" report to their offering. ... of the "Self Administration of High Viscosity ... Research and Markets ( ) has ... of High Viscosity Drugs" report to their ...
(Date:11/25/2015)... 2015 ... "Global Brain Monitoring Devices Market 2015-2019" ... ) has announced the addition ... Market 2015-2019" report to their offering. ... ) has announced the addition of ...
Breaking Medicine Technology: