SATURDAY, March 12 (HealthDay News) -- Asthma is becoming much more common in the United States and people should know and respond to the basic symptoms before they are faced with a potentially life-threatening attack, experts advise.

FRIDAY, March 11 (HealthDay News) -- Worried that your sleep patterns will be disrupted when the clocks move ahead one hour this weekend? The key is getting enough zzz's in advance, says one sleep expert.

SATURDAY, March 12 (HealthDay News) -- Japanese officials said Saturday that the risk of a radiation leak was declining at a nuclear power plant severely damaged by the powerful earthquake and tsunami that rocked the country Friday.