Presymptomatic genetic testing for neurodegenerative diseases can help patients make effective treatment decisions, but the medical profession needs to ensure that the increasing use of the tests is done responsibly.
Physicians treating adolescents need to give them the information to make intelligent and responsible decisions regarding sexual activity and reassure them of patient confidentiality.
Genetic information is redefining what society and the medical profession considers to be normal and what departures from the norm are deserving of medical intervention.