MONDAY, Feb. 13 (HealthDay News) -- Use of home oxygen in the United States has risen over the past decade, which has led to an increase in the number of patients with medical oxygen-related burn injuries, according to experts at the Burn Center at Wake Forest Baptist Medical Center.

MONDAY, Feb. 13 (HealthDay News) -- Getting divorced at a younger age causes more harm to health than getting divorced later in life, perhaps because older people have more coping skills to deal with the stress of divorce, a new study suggests.

(HealthDay News) -- It can take a "village" to help care for you and your baby during pregnancy, especially if you are diabetic.

(HealthDay News) -- Chewing tobacco contains at least 28 toxins that are known to cause cancer, the American Dental Association says.

MONDAY, Feb. 13 (HealthDay News) -- Here's another reason to get into shape: Physical activity may reduce the risk of dementia-related death, according to a new study.

MONDAY, Feb. 13 (HealthDay News) -- HIV-positive patients with larger waistlines may be at greater risk for memory problems, according to a new study. Exposure to combinations of certain anti-HIV drugs could play a role in this reduced mental function, researchers said.

MONDAY, Feb. 13 (HealthDay News) -- Routine screening at primary care clinics led to a two- to threefold increase in diagnoses of brain-function impairments such as dementia in older veterans, researchers say.

MONDAY, Feb. 13 (HealthDay News) -- Young adults in states that allow them to stay on their parents' health insurance until age 26 have better access to health care, according to a new study.

MONDAY, Feb. 13 (HealthDay News) -- For older people with a certain type and stage of lung cancer, administering radiation treatment after surgery may not extend survival, according to a new study.

MONDAY, Feb. 13 (HealthDay News) -- With televisions, computers, cellphones, school work and extracurricular activities, parents worry that their kids are so busy that they aren't getting enough sleep.

MONDAY, Feb. 13 (HealthDay News) -- Eating a Mediterranean-style diet appears to reduce damage to small blood vessels in the brain, a new study says.

MONDAY, Feb. 13 (HealthDay News) -- The cancer rate in children with juvenile arthritis is four times higher than in other children, a new study says.

SUNDAY, Feb. 12 (HealthDay News) -- Older people who eat too much are at risk for memory impairment, a new study contends.

MONDAY, Feb. 13 (HealthDay News) -- Pregnant women with low levels of vitamin D may be putting their children at risk for language difficulties, Australian researchers report.

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

MONDAY, Feb. 13 (HealthDay News) -- A lifetime's exposure to air pollution may contribute to mental decline in older women, a new study says.

MONDAY, Feb. 13 (HealthDay News) -- Patients with a history of heart disease will most likely not reduce their risk for developing cancer by taking vitamin B and/or omega-3 fatty acid supplements, a new French analysis suggests.

MONDAY, Feb. 13 (HealthDay News) -- Stem cell therapy's promise for healing damaged tissues may have gotten a bit closer to reality. In a small, early study, heart damage was reversed in heart-attack patients treated with their own cardiac stem cells, researchers report.

MONDAY, Feb. 13 (HealthDay News) -- Merck's Zioptan drops (tafluprost ophthalmic solution) has been approved by the U.S. Food and Drug Administration to lower pressure within the eye among people with high blood pressure of the eye (ocular hypertension) or open-angle glaucoma, the most common form of the disease.