Early Trauma Rewrites Brain Gene Activity in Dopamine Circuit

A mouse study in Neuron shows early-life stress increases the enzyme SETD7 in ventral tegmental area neurons, raising H3K4me1 marks and loosening DNA to prime dopamine-related genes for later activation. This makes animals more vulnerable to stress and anxiety, providing a potential biological mechanism for how childhood trauma increases mental-health risk and highlighting epigenetic targets for interventions, though human validation is needed; positive experiences might offer protective effects.