trauma in early life can change the brain.

Early trauma affects the child's nervous system. The nervous system is shaped by the child's experiences. Stress over a period of time can lead to changes in the parts of the brain that control and manage feelings. That is to say, stress and trauma early in life can change the brain. This can have long-term effects on physical, mental, and emotional growth. What's more, the impact of early abuse often extends into later childhood, teen, and even adult years.

suffice to say....
​