Navigation Links
More Evidence That Alcohol Hinders Good Sleep
Date:8/15/2011

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:
*Name:
*Comment:
*Email:
Related Image:
More Evidence That Alcohol Hinders Good Sleep
(Date:2/12/2016)... ... February 12, 2016 , ... The ThedaCare Center for ... General Hospital on April 5-7. The series is a multi-day, multi-workshop event designed ... workshops cover a broad range of topics, including coaching skills, the scientific method ...
(Date:2/12/2016)... Las Vegas, NV (PRWEB) , ... February 12, 2016 , ... ... of North Las Vegas Mayor John J. Lee, Nevada Military Support Alliance president Scott ... newest Fisher House at the VA Southern Nevada Healthcare System. This will be ...
(Date:2/12/2016)... ... February 12, 2016 , ... Vail knee specialist Robert LaPrade, MD, ... in 2016 . The list consists of physicians establishing, leading and partnering with ambulatory ... , An Ambulatory Surgery Center, also known as an ASC, is a modern ...
(Date:2/12/2016)... , ... February 12, 2016 , ... Donor Network West, ... California and Nevada, announced a partnership with San Ramon Regional Medical Center. Under the ... hospital’s facilities as a way to accommodate a more certain time frame for donor ...
(Date:2/12/2016)... (PRWEB) , ... February 12, 2016 , ... ... southwest Houston and surrounding communities by continuing it’s commitment to act as Agents ... Promise. The organization works closely with area homeless families to fulfill immediate needs ...
Breaking Medicine News(10 mins):
(Date:2/11/2016)... , Feb. 11, 2016  Kindred Biosciences, Inc. ... saving and improving the lives of pets, today announced ... of the New Animal Drug Application (NADA) for Zimeta™ ... field study (KB0120) of Zimeta for the control of ... Company. --> --> ...
(Date:2/11/2016)... FRANCISCO , Feb. 11, 2016   Health ... advancement of new health technologies, announced today " 10 ... achievements in health tech over the past ten years.   ... For nearly a decade, Health 2.0 has served as ... showcased and connected with thousands of technologies, companies, innovators, ...
(Date:2/11/2016)... Feb. 11, 2016  MiMedx Group, Inc. (NASDAQ: ... amniotic membrane and other birth tissues, human skin and ... and market advanced products and therapies, announced today that ... Global Healthcare Conference in New York ... Michael J. Senken , Chief Financial Officer and ...
Breaking Medicine Technology: