13/01/2021
Scientists studying neuroscience, epigenetics, endocrinology, inflammatory disorders, & other physiological systems have demonstrated that our earliest environments shape the developing brain, influence the expression of our genes, & affect the health of our body’s systems.
The most rapid period of growth for the human brain occurs in the earliest years of life. The structure & functioning of the human brain are determined not only by genetics, but also by interactions with other people and environment, as the brain molds itself in response to the inputs it receives. The brain is also the most plastic during this time; in other words, the brain is the most adaptable to the conditions it experiences during this period of life. Because of this plasticity, young children are especially vulnerable to the conditions in their lives & their interactions with key caregivers during the youngest years. Adversity during this time can have far-reaching consequences, but this time can also provide a window of opportunity to build the basis for lifelong resilience.
Safe, stable, stimulating, loving interactions between an infant and a parent or caregiver promote optimal brain & body development in the first three years of life.
Too many infants & toddlers do not experience the nurturing and responsive environments that positively shape developing brains and bodies, and instead are exposed to early adversity that inhibits optimal growth and development. Having a parent with severe depression, being exposed to violence, moving from house to house without a place to call home, going without enough to eat for days at a time- these instances of early adversity are far too common among young children, & they disproportionately affect children of color & children whose parents have lower levels of education or income. Although children are incredibly resilient, exposure to chronic stressors early in life charts a course for physical, cognitive, & emotional health problems that can be costly for families & society to navigate. Many disparities in health & wellbeing are rooted in the earliest years of development (Prenatal-to-3 policy impact center, 2021).