SATURDAY, June 11 (HealthDay News) -- Baseline concussion tests for athletes may do more harm than good in some cases, an expert warns.

SUNDAY, June 12 (HealthDay News) -- Researchers have identified three genes linked to migraine headache and found that people who inherit any one of these genes have a 10 to 15 percent greater risk for the condition.

SUNDAY, June 12 (HealthDay News) -- Weight-loss surgery doesn't decrease the risk of death among severely obese middle-aged adults, a new study says.

SUNDAY, June 12 (HealthDay News) -- Heart attack patients whose ambulances are diverted from the nearest ER to another one further away are at greater risk of dying -- not just soon after the heart attack, but for up to a year after the intervention, a new study finds.