A Palestinian brother and sister walk in front of a building which was destroyed in last summer's Israel-Hamas war, in the Shijaiyah neighborhood of Gaza City, northern Gaza Strip, Monday, Feb. 23, 2015. (AP Photo/Adel Hana)

Native Americans Have ‘Always Known’: Science Proves Genetic Inheritance Of Trauma

Extreme stress and trauma causes the body to release glucocorticoids, hormones which can permanently alter how cells express genes.