(HealthDay News) -- A nasal spray can help many allergy sufferers find relief from symptoms, but it's important that the spray be used correctly.

THURSDAY, Aug. 18 (HealthDay News) -- Smokers are less likely to buy cigarettes if they are in plain, unbranded packages with warning labels featuring graphic images of cancer, a new study finds.

THURSDAY, Aug. 18 (HealthDay News) -- Training can help surgical residents learn how to be more supportive and compassionate when talking with patients facing cancer, a new study finds.

THURSDAY, Aug. 18 (HealthDay News) -- Brown fat, also known as "good fat," burns more energy in active, thinner children and may help fight against obesity and diabetes, according to a new study.

THURSDAY, Aug. 18 (HealthDay News) -- Black researchers are 10 percentage points less likely than their white counterparts to receive research grants from the U.S. National Institutes of Health, according to a new study.

THURSDAY, Aug. 18 (HealthDay News) -- Many doctors continue to recommend annual screening for cervical cancer, even though current guidelines say some women can wait much longer between tests.

THURSDAY, Aug. 18 (HealthDay News) -- Children younger than 3 years old receive roughly the same amount of protection from the flu vaccine regardless of which method (injection, nasal spray, or one of each) is used to give the two recommended doses to them, according to a new federal study.

THURSDAY, Aug. 18 (HealthDay News) -- Trained sniffer dogs are able to detect lung cancer in its early stages, researchers have found.

THURSDAY, Aug. 18 (HealthDay News) -- Two gene variations that increase smokers' risk of lung cancer have been identified by researchers.

THURSDAY, Aug. 18 (HealthDay News) -- Overweight women may still feel stigmatized about their weight even if their family and friends don't judge them negatively, according to a new study.

THURSDAY, Aug. 18 (HealthDay News) -- Over the last decade, an increasing number of American children have been diagnosed with attention-deficit hyperactivity disorder (ADHD), a new government survey reveals.

THURSDAY, Aug. 18 (HealthDay News) -- A calcium test performed with the assistance of a CT scanner seems to provide insight into the likelihood that certain patients at moderate risk of heart problems will have a heart attack or stroke, researchers say.

Here are some of the latest health and medical news developments, compiled by the editors of HealthDay:

THURSDAY, Aug. 18 (HealthDay News) -- Flu vaccination levels among U.S. health care workers have risen in recent years but are still below the 2020 national health objectives, a new study says.

THURSDAY, Aug. 18 (HealthDay News) -- A healthy lifestyle helps you live longer, a new U.S. study confirms.

THURSDAY, Aug. 18 (HealthDay News) -- An experimental heart failure drug may change the way doctors treat this vexing condition, researchers say.

THURSDAY, Aug. 18 (HealthDay News) -- The 2011-12 flu vaccine protects against seasonal flu and H1N1, just like last year's, but that doesn't mean it's OK to skip your yearly flu shot, researchers from the U.S. Centers for Disease Control and Prevention warn.

THURSDAY, Aug. 18 (HealthDay News) -- Cases of Legionnaire's disease in the United States have tripled in the past decade, a new federal government report shows.