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:8/31/2015)... Aug. 31, 2015 Research and Markets ( ... "Saudi Arabia Biomedical Sensors Market - Growth, Trends & ... The Saudi Arabia Biomedical Sensors market is estimated ... 3.64% over the period 2014-2020 The near ... the genetic formulation of each individual. These sensors can ...
(Date:8/24/2015)... 24, 2015 The consulting company Frost ... biometrics manufacturer DERMALOG and its customized solutions and products for ... Company of the Year Award". DERMALOG is particularly successful with ...   -Cross reference: Picture is available at AP ... On Thursday evening, in South Africa,s ...
(Date:8/20/2015)... Aug. 20, 2015 NXT-ID, Inc. (NASDAQ: ... company focused on the growing mobile commerce market and ... joined The Smart Card Alliance and the EMV Migration ... and the Smart Card Alliance Latin America (SCALA) Chapter ... peers and thought leaders promoting adoption of smart card ...
Breaking Biology News(10 mins):Saudi Arabia Biomedical Sensors Market Report 2015 - Growth, Trends & Forecasts (2014-2020) 2Frost & Sullivan Honors DERMALOG with Biometrics Prize for Achievements in Africa 2Frost & Sullivan Honors DERMALOG with Biometrics Prize for Achievements in Africa 3NXT-ID, Inc. Joins Smart Card Alliance and EMV Migration Forum 2NXT-ID, Inc. Joins Smart Card Alliance and EMV Migration Forum 3NXT-ID, Inc. Joins Smart Card Alliance and EMV Migration Forum 4
... study from Rhode Island Hospital has found that a change ... contribute to improved outcomes of the victims and to the ... enforcement officers often serve as medical first responders, there is ... or should do, at the scene of an overdose. The ...
... MedNet Solutions , a global life sciences technology ... to announce that Accelovance , an award-winning, full-service ... Vaccines and General Medicine development, has joined the ... as an iMedNet Partner will facilitate Accelovance,s ...
... of Helsinki and Folkhlsan Research Center has identified a ... breeds, the Norwegian Elkhound and the Karelian Bear Dog. ... and a candidate gene for human chondrodysplasias. The finding ... health. A genetic test can now be used to ...
Cached Biology News:Changing laws, attitudes of police response to drug overdose may lead to better outcomes 2MedNet Solutions Proudly Welcomes Accelovance To The iMedNet Partner Program 2MedNet Solutions Proudly Welcomes Accelovance To The iMedNet Partner Program 3New dwarfism mutation identified in dogs 2
(Date:9/2/2015)... , September 2, 2015 ... the winners of the 2015 BeHEARD science challenge, a ... offers rare disease researchers, access to the latest life ... its drug repositioning and pathway analytics capability to support ... Nation Foundation in the study of Niemann-Pick Disease Type ...
(Date:9/2/2015)... 2, 2015 Aytu BioScience, Inc. (OTCQB: AYTU), ... urological and related conditions, announced today that it has ... convertible note financing, raising a total of $5.175 million, ... million. Josh Disbrow , Chief ... placement are intended to be used to conduct clinical ...
(Date:9/2/2015)... CHARLOTTESVILLE, Virginia , September 2, 2015 /PRNewswire/ ... Sponsoring der Gewinner des Wettbewerbs BeHEARD von 2015 ... einen internationalen vom Rare Genomics Institute. ... Wirksamkeit von Medikamenten für die Behandlung anderer Krankheiten ... wurde, Steven Laffoon und sein Team ...
(Date:9/2/2015)... Diego, CA (PRWEB) , ... September 02, 2015 ... ... troubleshooting faults in manufacturing equipment, to creating professional commercial video content, to analysis ... detailed views of fascinating events that go by too quickly to process with ...
Breaking Biology Technology:Biovista Sponsors Wylder Nation Foundation's Research on Acid Sphingomyelinase Deficiency 2Aytu BioScience Completes $5.175 Million Private Placement 2Aytu BioScience Completes $5.175 Million Private Placement 3Biovista sponsert die Forschung von Wylder Nation Foundation zum Thema Mangel an saurer Sphingomyelinase 2Fastec Introduces the Quad-HD TS5-Q High-Speed Camera 2Fastec Introduces the Quad-HD TS5-Q High-Speed Camera 3
... GenVec, Inc. (Nasdaq: GNVC ) today announced that ... Stockholder Rights Plan through the adoption of a new Rights ... on September 7, 2011, which is the date that GenVec,s ... Agreement was adopted in connection with the expiration of the ...
... Incorporated (Nasdaq CM: INSM), a biopharmaceutical company, announced today ... be presenting a corporate overview at the 2011 Wedbush ... 16, 2011, at 8:00 AM ET, in New York. ... on the Investors page of Insmed,s website, http://www.insmed.com ...
... MADISON, Wis., Aug. 11, 2011 Cellular Dynamics International ... Research Grant Program. This grant program will advance researchers, ... cell types derived from them, and the role and ... basic research, drug discovery and development.   ...
Cached Biology Technology:GenVec Renews Stockholder Rights Plan 2GenVec Renews Stockholder Rights Plan 3Insmed to Present at 2011 Wedbush Securities Life Sciences Management Access Conference 2Cellular Dynamics Launches Innovative Research Grant Program 2
... medium for the detection, isolation, differentiation ... thyphi) and total coliforms from other ... maximum of 24 hours, needs no ... preparation and performs a higher diagnostic ...
Large-capacity refrigerated incubator chamber holds up to 4 independently-operated shakers. Programmable heat, refrigeration, humidifcation are standard. Photosynthetic operation, optional....
...
... Dynamic Focusing MALDI (PDF-MALDI) source provides fast, ... do not need online separation. Paired with ... and Agilents powerful Spectrum Mill software, the ... of 2D gel-spot digests. It provides clean, ...
Biology Products: