This morning I read in the Calgary Herald this article:
Getting a call from mom can be nearly as effective as a maternal hug for calming down after a tough event, according to a probe into the chemistry of human relationships.
Researchers measured levels of a stress hormone, cortisol, and also a comforter hormone, oxytocin, among 61 young girls who had to make a presentation in public.
The volunteers, aged seven to 12, were asked to do public speaking and then carry out an oral arithmetic test in front of an audience, according to the unusual experiment, reported on Wednesday by the British journal Proceedings of the Royal Society B.
Immediately after the event, a third of the girls were physically comforted by their mother; another third received a phone call from mom but did not see or touch her; and the remaining third received no support but watched a neutral film for 75 minutes.
As expected, cortisol levels, measured in saliva, soared as the youngsters became stressed by having to address the public.
But within 30 minutes of the event, cortisol concentrations returned to normal among the children who experienced direct physical contact with their mothers.
Among the speech-only group, it took somewhat longer -- about an hour -- for cortisol levels to subside to normal. But among the no-contact group, levels were still more than a third above normal at the one-hour mark.
Similarly, oxytocin concentrations peaked highest among girls who were hugged, followed by girls who were given vocal support but no physical comfort. The surge was still prominent an hour afterwards.
But oxytocin levels remained very low and flat among the "no contact" group of girls who received neither physical nor vocal support.
The findings raise intriguing questions about human evolution, say the researchers led by Leslie Seltzer of the University of Wisconsin at Madison.
Oxytocin is famous as the "cuddle" hormone, a feel-good, trust-making biochemical found only in mammals.
Past research has found that the hormone is released on physical contact, helping to cement attachment between parents and offspring and between couples.
The new experiment confirms for the first time that this powerful hormone can also be triggered by words.
Isn't that amazing? Even just hearing a mother's voice can soothe a child. I guess that explains why I still phone my mother when I need a virtual hug.
This is a photo of my daughter and me at least 12 years ago. She posted it to her Facebook account on mother's day.
We're still hugging after all these years, but isn't it amazing that I can give her a hug over the phone with just my voice?
What a beautiful thing.