The availability of consumer DNA tests and databases has allowed long-hidden family secrets to be revealed, including mistaken paternity and unknown siblings. It has also taken the anonymity away from some cases of sperm donation. Two experts discuss the ethics of overturning this promised secrecy and the impact that the revelation of secrets can have on entire families.
Dr. Joel Salinas has mirror touch synesthesia, a condition involving cross-wiring in the brain. The result is that visual stimuli prompt a response in his touch system. He literally feels it when people experience pain. Salinas discusses how this strange condition works and how he is able to use it in diagnosis.
A look at the top medical headlines for the week of September 29, 2019.