This chapter explores the holistic approach, what this means, and how practitioners can apply the holistic approach to language ­development specifically. Holistic doesn't have to have one sole meaning, but generally, the holistic approach is all about connections. The human brain is a creation of connections. Strengthening these connections is one of the fundamental aspects of early brain development and for this reason, the first three years of a baby's life are arguably some of the most, if not the most, important for brain development. While birth to three is a pivotal time for brain development, birth to ten is commonly recognised as the time in a child's life when new languages are most easily accessible source, this time period is also known as a sensitive period. Toxic stress arises in particularly neglectful, abusive, or poverty-stricken situations when children are not offered adequate adult support.