Fathers who sleep closer to children have lower testosterone levels

September 5, 2012

Closer sleeping proximity between fathers and children is associated with a greater decrease in the father's testosterone level, with possible implications for parenting behavior. The full report is published Sep. 5 in the open access journal PLOS ONE.

Fathers' have been associated with parenting behavior and involvement across species, with higher levels generally associated with lower .

The authors of the current study, led by Lee Gettler of the University of Notre Dame, studied 362 fathers in the Philippines to determine whether their sleeping arrangements – either sleeping on the same surface as their children, in the same room, or separately – were related to their testosterone levels.

The researchers found that close sleep proximity between fathers and their children was associated with greater decreases in testosterone level as the men transitioned to fatherhood, as well as lower overall levels relative to fathers that slept apart from their children.

Explore further: Are fathers wired to provide offspring care? Testosterone drops steeply after baby arrives, study confirms

More information: Gettler LT, McKenna JJ, McDade TW, Agustin SS, Kuzawa CW (2012) Does Cosleeping Contribute to Lower Testosterone Levels in Fathers? Evidence from the Philippines. PLOS ONE 7(9): e41559. doi:10.1371/journal.pone.0041559

Related Stories

Are fathers wired to provide offspring care? Testosterone drops steeply after baby arrives, study confirms

September 12, 2011
A new Northwestern University study provides compelling evidence that human males are biologically wired to care for their offspring, conclusively showing for the first time that fatherhood lowers a man's testosterone levels.

Sleep loss lowers testosterone in healthy young men

May 31, 2011
Cutting back on sleep drastically reduces a healthy young man's testosterone levels, according to a study published in the June 1 issue of the Journal of the American Medical Association (JAMA).

Recommended for you

Hibernating ground squirrels provide clues to new stroke treatments

November 17, 2017
In the fight against brain damage caused by stroke, researchers have turned to an unlikely source of inspiration: hibernating ground squirrels.

Molecular guardian defends cells, organs against excess cholesterol

November 16, 2017
A team of researchers at the Harvard T. H. Chan School of Public Health has illuminated a critical player in cholesterol metabolism that acts as a molecular guardian in cells to help maintain cholesterol levels within a safe, ...

Prototype ear plug sensor could improve monitoring of vital signs

November 16, 2017
Scientists have developed a sensor that fits in the ear, with the aim of monitoring the heart, brain and lungs functions for health and fitness.

Ancient enzyme could boost power of liquid biopsies to detect and profile cancers

November 16, 2017
Scientists are developing a set of medical tests called liquid biopsies that can rapidly detect the presence of cancers, infectious diseases and other conditions from only a small blood sample. Researchers at The University ...

FDA to crack down on risky stem cell offerings

November 16, 2017
U.S. health authorities announced plans Thursday to crack down on doctors pushing stem cell procedures that pose the gravest risks to patients amid an effort to police a burgeoning medical field that previously has received ...

Engineering the gut microbiome with 'good' bacteria may help treat Crohn's disease

November 15, 2017
Penn Medicine researchers have singled out a bacterial enzyme behind an imbalance in the gut microbiome linked to Crohn's disease. The new study, published online this week in Science Translational Medicine, suggests that ...

1 comment

Adjust slider to filter visible comments by rank

Display comments: newest first

Ionian
not rated yet Sep 06, 2012
When men sleep near their children, their T drops and they'll have less sexual desire for their wife/partner, and so have less additional children. When children get older and move to their own room, his T will recover, and he'll desire his partner again. Genious! Self regulation. Feedback loop.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.