Early Child Trauma Can Affect DNA?

Interesting study:

Scientists have discovered that childhood trauma can actually alter your DNA and shape the way your genes work. This confirms in humans earlier findings in rats, that maternal care plays a significant role in influencing the genes that control our stress response.

....

Epigenetics is the study of changes in the function of genes that don�t involve changes in the sequences of DNA. The DNA is inherited from our parents; it remains fixed throughout life and is identical in every part of the body. During gestation and even later in development, however, the genes in our DNA are marked by a chemical coating called DNA methylation. These marks are somewhat sensitive to one�s environment, especially early in life. The epigenetic marks punctuate the DNA and program it to express the right genes at the appropriate time and place.