Good News Notes:
“This is the first known study to show that a prenatal social intervention may improve health outcomes in offspring, as measured by autonomic nervous system responses, said Amanda Noroña-Zhou, PhD, first author of the study in Psychosomatic Medicine.
“It is really well established that maternal stress in pregnancy increases the risk for health problems in the children,” said Noroña-Zhou, PhD, a clinical psychologist affiliated with UCSF’s Center for Health and Community. “But we haven’t had a good understanding of how this process unfolds and of the biological mechanisms underlying it, or whether we can buffer the effects of stress on negative health outcomes.”
The researchers studied 135 mother-infant dyads from low-income, racially and ethnically diverse backgrounds who were experiencing high stress in their lives. Infants whose mothers underwent an eight-week mindfulness-based program had a faster cardiovascular recovery from stressful interactions, as well as more self-soothing behavior, than those who didn’t.
An ability to “bounce back” from stress is tied to better health outcomes later in life, said Nicki Bush, PhD, associate professor of psychiatry and pediatrics in the UCSF Weill Institute for Neurosciences and the senior author on the study.
“There has been so little research on what we can do in the positive lane; it’s been mostly about showing the negative effects of prenatal stress,” Bush said. “This is the next frontier — interventions for moms that have positive effects on both mom and baby.”
Quick Recovery from a Stressful Event
The study follows one from 2019 showing the same mindfulness intervention reduced stress and depression in mothers, as well as improved their glucose tolerance and physical activity levels.
To elicit the infants’ stress response, mothers were trained in the “still face paradigm,” whereby the mothers played with their children for two minutes, then held a completely neutral facial expression for two minutes and ignored the babies’ bids for attention. They repeated the play-ignore cycle and ended with two minutes of play.
Using electrodes, the researchers collected measurements of the infants’ autonomic nervous system activity — the fight-or-flight and rest-and-digest responses — during the exercise. Trained observers, who were unaware of treatment status, also coded the infants’ behavior responses.
The fight-or-flight response of babies whose mothers had undergone the mindfulness program was more acute when they were being ignored by their mothers and also receded more quickly after the stressor went away than babies in the control group. The treatment-group babies engaged in more self-soothing behavior, such as sucking their thumbs and looking at their hands, as well….”
View the whole story here: https://www.sciencedaily.com/releases/2022/03/220310143732.htm