I’m trying to find it.. in the meantime, some food for thought..
The Human Brain – Stress – Reading this stuff with infants in mind makes it seem even more harmful than I was thinking.. basically, stress interferes with growth and development. ”[Some stress hormones] remain active in the brain for too long – injuring and even killing cells in the hippocampus, the area of your brain needed for memory and learning”
“Other hormones shut down functions unnecessary during the emergency. Growth, reproduction, and the immune system all go on hold.”
“Even everyday traffic noise can harm the health and well-being of children. In the first study to look at the non-auditory health effects of typical ambient community noise, it was shown that chronic low-level noise from local traffic raised levels of stress hormones in children, as well as their blood pressure and heart rates.
“We found that even low-level noise can be a stressor. It elevates psychophysiological factors and triggers more symptoms of anxiety and nervousness,” says environmental psychologist Gary Evans of Cornell University, an international expert on environmental stress, such as noise, crowding, and air pollution.”