SUNDAY, Jan. 16 (HealthDay News) -- Arizona congresswoman Gabrielle Giffords underwent surgery Saturday to replace the breathing tube that had been in place since she was shot through the head a week ago in an attack in Tucson that killed six people.

SUNDAY, Jan. 16 (HealthDay News) -- The sense of touch influences your perceptions of masculinity and femininity, according to a new study.

FRIDAY, Jan. 14 (HealthDay News) -- Researchers have simultaneously discovered a gene that seems to raise the risk of cardiovascular disease, while also noting that having the blood type O might guard against heart attack once arteries become clogged.