Navigation Links
Sleep quantity affects morning testosterone levels in older men

The testosterone levels of healthy men decline as they get older. As sleep quality and quantity typically decrease with age, objectively measured differences in the amount of sleep a healthy older man gets can affect his level of testosterone in the morning, according to a study published in the April 1st issue of the journal SLEEP.

The study, conducted by Plamen Penev, MD, PhD, of the University of Chicago, focused on 12 healthy men between the ages of 64 and 74. Three morning blood samples were pooled for the measurement of total and free testosterone. In addition to overnight laboratory polysomnography, wrist activity monitoring for six-to-nine days were used to determine the amount of nighttime sleep of the participants in everyday life settings.

The main outcome levels were total sleep time and morning testosterone levels. Analyses revealed that the amount of nighttime sleep measured by polysomnography was an independent predictor of the subjects?morning total and free testosterone levels.

"The results of the study raise the possibility that older men who obtain less actual sleep during the night have lower blood testosterone levels in the morning," said Penev. "Although the findings suggest that how long a person sleeps may be an indicator of age-related changes in important hormone signals in the body, future studies are needed to determine the importance of these relationships for the health of older adults."

Recent studies associate lack of sleep with serious health problems such as an increased risk of depression, obesity, cardiovascular disease and diabetes.

Experts recommend that adults get between seven and eight hours of sleep each night to maintain good health and optimum performance.

Those who think they might have a sleep disorder are urged to discuss their problem with their primary care physician, who will issue a referral to a sleep specialist.
'"/>

Source:American Academy of Sleep Medicine


Page: 1

Related biology news :

1. Researchers Identify Cause of Early Bird Sleep Disorder
2. Sleeping Sickness Epidemic Spreading in Uganda
3. Sleeping beauty plays a significant role in identifying cancer genes
4. Nighttime Dying Linked To Sleep Apnea From Brain Cell Loss
5. Sleeping sickness parasite shows how cells divide their insides
6. Sleep deprivation doubles risks of obesity in both children and adults
7. Sleep enforces the temporal sequence in memory
8. Sleep disturbances affect classroom performance
9. Sleepless for science: Flies show link between sleep, immune system in Stanford study
10. Quality not quantity important for immune response to HIV
11. Cytoplasm affects the number of vertebrae in carp-goldfish clones
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Sleep quantity affects morning testosterone levels older men

(Date:10/15/2014)... WASHINGTON, N.Y. , Oct. 15, 2014 /PRNewswire/ ... technology solutions for home and community-based care, today ... benefits of implementing Sandata,s Santrax® Electronic Visit Verification™ ... Care Services is a home health company founded ... Texas . The ...
(Date:10/15/2014)... bacterial pneumonia in female mice to an enzyme activated ... naturally more resistant to respiratory infections than males. Now, ... resistance to bacterial pneumonia in female mice is linked ... also show that this enzyme is ultimately activated by ... The team, lead by Professor Lester Kobzik at the ...
(Date:10/14/2014)... Research shows SIRT6—a protein known to inhibit the ... of skin cancers by turning on an enzyme that ... , Previously considered protective, SIRT6 is part of a ... genomic stability and prevent some of the genetic flaws ... can lead to cancer. This study, in the journal,s ...
Breaking Biology News(10 mins):Sandata Announces Case Study with Quality Care Services, Inc. 2Two-faced gene: SIRT6 prevents some cancers but promotes sun-induced skin cancer 2
... (ESA) will present its fifth annual Regional Policy Award ... during the Society,s upcoming conference in Portland, Oregon. The ... who has an outstanding record of informing political decision-making ... present this prestigious award to Ken Bierly for his ...
... (Boston) A recent study led by Boston University School ... plays a significant role in the regulation of high fat, ... which are published online in PLoS ONE , also ... type 2 diabetes. Katya Ravid, DSc/PhD, professor of ...
... Institution (WHOI) researchers have partnered with two companies ... WHOI: the Imaging FlowCytobot, an automated underwater microscope, ... light to provide wireless transmission of data, including ... WHOI biologists Robert Olson and Heidi Sosik, creators ...
Cached Biology News:Ken Bierly of the Oregon Watershed Enhancement Board to receive ESA Regional Policy Award 2Ken Bierly of the Oregon Watershed Enhancement Board to receive ESA Regional Policy Award 3BUSM study identifies receptor's role in regulating obesity, type 2 diabetes 2WHOI scientists/engineers partner with companies to market revolutionary new instruments 2WHOI scientists/engineers partner with companies to market revolutionary new instruments 3WHOI scientists/engineers partner with companies to market revolutionary new instruments 4
(Date:10/22/2014)... 2014 WriteResult, LLC – a ... been working with a team of researchers from Yale ... Community Farming Collaborative to provide electronic questionnaire data collection ... study, which started in May, aims to evaluate the ... weekly exposure to and participation in urban agriculture to ...
(Date:10/22/2014)... (PRWEB) October 22, 2014 According ... Market by Service Type (Consulting, Integration, Deployment & ... by Deployment Model (Public, Private, Others (Hybrid & ... MarketsandMarkets, defines and segments the Cloud Professional Services ... and forecasting of revenues. It also identifies the ...
(Date:10/22/2014)... 22, 2014 Research and Markets  has ... by Material, by Application, Geography - Global Analysis and ... Organic electronics, also called as polymer ... science which deals with small conductive molecules and electrically ... molecules and polymers are carbon based, made using synthetic ...
(Date:10/20/2014)... (PRWEB) October 20, 2014 Convey ... that a team from Iowa State University won first ... contest. Using a Convey HC-2ex, the team’s solution achieved ... times faster than the second place finisher. , Experts ... embarked upon the month long challenge, using a variety ...
Breaking Biology Technology:myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 2myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 4Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 5Global Organic Electronics (Semiconductor, Conductive, Dielectric and Substrate) Market - Analysis and Forecast (2014 - 2020) 2Global Organic Electronics (Semiconductor, Conductive, Dielectric and Substrate) Market - Analysis and Forecast (2014 - 2020) 3Team from Iowa State Wins 2014 MemoCODE Design Contest Using Convey HC-2ex 2Team from Iowa State Wins 2014 MemoCODE Design Contest Using Convey HC-2ex 3
... Oct. 17 Panacea Pharmaceuticals,Inc. announced today ... diagnostic test, is now available from Panacea ... that should facilitate the identification,of recurrence among ... a division of Panacea Pharmaceuticals, is certified ...
... SBS, CALGARY, Oct. 17 /PRNewswire-FirstCall/ - Botaneco, ... announced that it has reached an,agreement with AVAC ... the,development of Botaneco as an independent business. The ... period, beginning in the fourth,quarter of 2007, upon ...
... KYPH ) announced today that its stockholders approved ... MDT ) at a special,meeting of stockholders held ... Kyphon entered into a,definitive merger agreement with Medtronic, pursuant ... shares of Kyphon common stock for,$71.00 per share in ...
Cached Biology Technology:Panacea Pharmaceuticals Announces the Availability of BC Detect(SM), a Serum- Based Diagnostic Test for Breast Cancer 2Panacea Pharmaceuticals Announces the Availability of BC Detect(SM), a Serum- Based Diagnostic Test for Breast Cancer 3Panacea Pharmaceuticals Announces the Availability of BC Detect(SM), a Serum- Based Diagnostic Test for Breast Cancer 4Botaneco obtains $2.4 million in funding from AVAC 2Botaneco obtains $2.4 million in funding from AVAC 3Kyphon Stockholders Approve Merger with Medtronic 2
... have been many modifications to the original formulas ... solutions still play an important role in tissue,culture. ... pH and osmotic balance in the medium and ... inorganic ions, is as valuable today as when ...
Request Info...
... LXQ linear ion trap mass spectrometer enables ... laboratory., The LXQ linear ion trap mass ... proteomic applications, delivering the fast cycle time ... ion trap at an attractive price. ...
... Safe DNA gel stain was developed specifically for ... bromide for staining DNA in agarose or acrylamide ... mutagenic than ethidium bromide but SYBR Safe stain's ... bromide. SYBR Safe stain comes as a premixed ...
Biology Products: