Navigation Links
Middle-aged men: Could dwindling testosterone levels decrease sleep?
Date:5/14/2010

Montreal, May 14, 2010 At 30 years old, male testosterone levels drop by one to two percent annually. By age 40, men's quality of sleep begins to diminish. Could there be a link between decreased testosterone and reduced sleep? Absolutely according to Zoran Sekerovic, a graduate student from the University of Montreal Department of Psychology, who presented his findings at the annual conference of the Association francophone pour le savoir (ACFAS).

Sekerovic discovered a link between testosterone levels in men over 50 and their quality of sleep specifically less deep sleep i.e. Phases III and IV of the slumber cycle. "Deep sleep is when the recuperation of body and mind is optimal," says Sekerovic, adding his is the first study to find this correlation.

In young men, deep sleep represents 10 to 20 percent of total sleep. By age 50, it decreases to five to seven percent. For men over 60, it can disappear altogether. The study didn't find any correlation with other parts of the sleep cycle: falling asleep, Phases I and II, or paradoxical sleep, when most of dreaming occurs.

The University of Montreal researcher explains that men in their 20s don't have such a correlation because their neuronal circuits are intact. "With age, there is neuronal loss and the synchronization of cerebral activity isn't as good, which is why there is a loss of deep sleep. Because deep sleep requires great synchronization," says Sekerovic. "Low levels of testosterone intensify the lack of synchronization and can explain 20 percent of men's inability to experience deep sleep."

Sekerovic suggests dwindling testosterone levels are what impact sleep, not vice-versa, as other studies have suggested. He adds previous investigations measured daily fluctuations in testosterone levels, which are higher in the morning.

If Sekerovic is right, his findings could re-ignite the hormone therapy debate. "The loss of deep sleep is a serious problem that could be treated with testosterone. That would be tremendous progress," says Sekerovic. "But hormone therapy can have secondary effects. Therefore, it will be essential to better understand the mechanisms leading to the loss of deep sleep."

This study was conducted under the supervision of Julie Carrier, a professor of psychology at the University of Montreal and director of the Chronobiology Laboratory at the Hpital du Sacr-Coeur de Montral.


'/>"/>

Contact: Sylvain-Jacques Desjardins
sylvain-jacques.desjardins@umontreal.ca
514-343-7593
University of Montreal
Source:Eurekalert

Related medicine news :

1. Middle-aged Americans report more mobility-related disabilities
2. Middle-aged Americans reporting more mobility related disabilities, study finds
3. Overweight middle-aged adults at greater risk for cognitive decline in later life
4. Sniff of local anesthetic in the dentists chair could replace the needle
5. Response to vaccines could depend on your sex
6. Enter One Year Auction Contest; You Could Win 5% of Winning Bid or Buy Now - $1 Million Option Proceeds
7. Ingredient in Dark Chocolate Could Guard Against Stroke
8. Gulf Oil Spill Could Threaten Human Health
9. Could the Pill Lower a Womans Sex Drive?
10. Duty of Care - New Driving Legislation Could Put You in Court! UKContractHireandLeasing spread the word on these new regulations
11. Stool DNA testing could play expanded role in colon cancer prevention
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/5/2016)... ... May 05, 2016 , ... ... and Android devices. VisualDx is the first point of care diagnostic support ... general medicine. The system speeds diagnosis, therapy decisions and patient education for ...
(Date:5/5/2016)... ... ... is just around the corner. Summer means a lot of different things to people. ... all day and night. Parents often lament the coming of summer as they will have ... trips to the beach, backyard cookouts, fireworks on the Fourth of July, and even perhaps ...
(Date:5/5/2016)... ... , ... Dermatologic surgeons performed nearly 10 million medically necessary and cosmetic procedures ... , The results of the 2015 ASDS Survey on Dermatologic Procedures released today reveal ... the growing popularity of soft-tissue fillers and body sculpting procedures. , For the ...
(Date:5/5/2016)... ... May 05, 2016 , ... ... , The Medical Society of Northern Virginia, Announces DoctorsTelemed?, A telehealth ... Medical Society of Northern Virginia (MSNVA) launches DoctorsTelemed?, a telemedicine solution that ...
(Date:5/5/2016)... , ... May 05, 2016 , ... Nepenthe Laboratory Services ... Elementary School last week to raise non-perishable food item donations for Food for Lane ... Day” hosted on NBC. , “The goal of the assembly was to create an ...
Breaking Medicine News(10 mins):
(Date:5/4/2016)... May 4, 2016  It,s time for an upgrade. There are many medical recorders ... 3.5 inch LCD, the illustrious DVMAXX HD  offers unparalleled connectivity and functionality.  Ampronix ... a world class manufacturer of innovative technology.  Photo - http://photos.prnewswire.com/prnh/20160503/363416 ... ... ...
(Date:5/4/2016)... New Jersey , May 4, 2016 ... its successful completion of an alternative public offering (APO). ... wholly owned operating company, Valeritas, Inc. and a private ... common stock at $5.00 per share. Under ... on May 3, 2016, Valeritas Holdings, Inc. will trade ...
(Date:5/4/2016)... 4, 2016 Research ... "Global Acute lymphocytic Leukemia Market and Competitive ... offering.       (Logo: http://photos.prnewswire.com/prnh/20160330/349511LOGO ... Leukemia Market and Competitive Landscape Highlights 2016, ... pipeline products, Acute Lymphocytic Leukemia epidemiology, Acute ...
Breaking Medicine Technology: