(HealthDay News) -- If you have lower back pain, sitting at an office desk all day can aggravate your symptoms.

(HealthDay News) -- When a baby has a fever, parents may be unsure if this warrants a call to the pediatrician.

MONDAY, May 7 (HealthDay News) -- College students are more likely to snack on fresh fruits and vegetables when these healthy options are placed where they can easily reach them, a new study suggests.

MONDAY, May 7 (HealthDay News) -- Pre-teens living in states that require vaccinations for incoming middle school students are more likely to be immunized than those in states without such requirements, a new study finds.

MONDAY, May 7 (HealthDay News) -- Giving earplugs to patients in the intensive care unit can improve their sleep, reduce their confusion and delay the onset of delirium, according to a new study.

MONDAY, May 7 (HealthDay News) -- Exercise can slow muscle wasting, boost strength and reduce inflammation caused by aging and heart failure, a new study confirms.

MONDAY, May 7 (HealthDay News) -- A new study suggests that many mothers of overweight toddlers misjudge their child's weight and that could lead to overfeeding, researchers say.

SUNDAY, May 6 (HealthDay News) -- Scientists who found a way to make white fat behave more like brown fat say their discovery could lead to new obesity treatments.

MONDAY, May 7 (HealthDay News) -- People who suffer depression when they're middle-aged or elderly may also have an higher risk of dementia later, a new study suggests.

SATURDAY, May 5 (HealthDay News) -- Birth defects are more common after certain infertility treatments, but whether the cause is the assisted reproduction techniques themselves or the underlying biology preventing conception isn't clear, Australian researchers say.

MONDAY, May 7 (HealthDay News) -- Those suffering from the common cold will try almost anything to relieve their symptoms, but a cure has yet to be found.

MONDAY, May 7 (HealthDay News) -- A new study finds that heart attack survivors who live close to major roads are at increased risk for death from all causes during a 10-year span.

MONDAY, May 7 (HealthDay News) -- Kids who spend lots of time in front of the TV have poorer diets overall, a new study of U.S. middle school students finds.

MONDAY, May 7 (HealthDay News) -- If you're looking for a way to keep dementia at bay, a new study suggests you can do so by developing a firm purpose in life.

MONDAY, May 7 (HealthDay News) -- Got something to report about yourself? An opinion, perhaps, or a status update? Nobody may care except you, but new brain research suggests you can make yourself feel good simply by sharing.

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

MONDAY, May 7 (HealthDay News) -- Doctors should take the time to counsel children, teens and young adults on the dangers of sun exposure and tanning beds, according to new recommendations from the U.S. Preventive Services Task Force.

MONDAY, May 7 (HealthDay News) -- Among U.S. adolescents, misuse of prescription painkillers peaks at age 16, earlier than thought, a new large survey analysis reveals.

MONDAY, May 7 (HealthDay News) -- Even if the skyrocketing rates of obesity level off, 42 percent of Americans will be obese and 11 percent will be severely obese by the year 2030, a new report predicts.