«The brain along with the reproductive system and every other cell in your body is exquisitely sensitive to exceedingly small changes in estrogen and other sex hormones, and the fact that the environment is full of chemicals that can activate estrogen receptors means this phenomenally sensitive system is being perturbed
constantly by environmental factors.»
Although genes contribute to the array of abilities and limits each of us possesses, from conception forward their expression is
constantly shaped
by environmental factors,
by the unique experiences of each individual and
by purely chance
factors in biological and social development.