Fathers who sleep closer to children have lower testosterone levels

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.

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

add to favorites email to friend print save as pdf

Related Stories

Do US men value fatherhood over their careers?

Oct 13, 2011

The classic figure of a distant, career-focused father who spends lots of time at the office and who has little time for his kids might be getting outdated, a new study shows.

Sports 1, housework, 0

Jul 12, 2012

Pressure to be more involved in their children's lives has many middle class men turning to sports as a way to nurture their kids. This softening of gender roles might be seen on the field, but researchers found it doesn't ...

Recommended for you

Gamers helping in Ebola research

19 hours ago

Months before the recent Ebola outbreak erupted in Western Africa, killing more than a thousand people, scientists at the University of Washington's Institute for Protein Design were looking for a way to stop the deadly virus.

Carcinogenic role of a protein in liver decoded

21 hours ago

The human protein EGFR controls cell growth. It has mutated in case of many cancer cells or exists in excessive numbers. For this reason it serves as a point of attack for target-oriented therapies. A study ...

A new way to diagnose malaria, using magnetic fields

Aug 31, 2014

Over the past several decades, malaria diagnosis has changed very little. After taking a blood sample from a patient, a technician smears the blood across a glass slide, stains it with a special dye, and ...

User comments

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.