(HealthDay News) -- Baby carriers can be comforting for baby and keep your hands free. But you should take care to prevent carrier-related injuries, especially from falls.

(HealthDay News) -- Sometimes, there's nothing you can do to avoid a medical error.

TUESDAY, Nov. 30 (HealthDay News) -- The number of prescriptions for controlled medications such as opioids and stimulants has nearly doubled in adolescents and young adults since 1994.

TUESDAY, Nov. 30 (HealthDay News) -- Primary school children cannot accurately estimate the speed of approaching vehicles moving faster than 20 miles per hour, finds a new study.

TUESDAY, Nov. 30 (HealthDay News) -- Early assessment of rheumatoid arthritis can reduce the amount of joint damage and improve the likelihood of disease remission without having to take disease-modifying antirheumatic drugs, known as DMARDs, new research indicates.

TUESDAY, Nov. 30 (HealthDay News) -- Runners who took part in a two-month, 4,500-kilometer race lost 5.4 percent of body volume during the event, including 50 percent of their body fat, according to a new report.

TUESDAY, Nov. 30 (HealthDay News) -- Acupuncture alters the way that the brain perceives and processes pain, a finding that suggests the traditional Chinese treatment can effectively relieve pain, according to a new study.

TUESDAY, Nov. 30 (HealthDay News) -- Superantigens -- toxins produced by staphylococcus bacteria -- are more complex and may cause more illnesses than formerly realized, say Swedish researchers.

TUESDAY, Nov. 30 (HealthDay News) -- Patients have better outcomes when pharmacists are part of patient-care teams, according to a new review.

TUESDAY, Nov. 30 (HealthDay News) -- Despite calls by some experts that Americans take in much more vitamin D, a new report from the Institute of Medicine finds that most people are getting enough of the nutrient each day.

TUESDAY, Nov. 30 (HealthDay News) -- Not only does extra weight around the middle increase a woman's risk of heart disease and diabetes, new research suggests it also ups a woman's risk of developing osteoporosis.

TUESDAY, Nov. 30 (HealthDay News) -- Autistic children are much more likely to have defects in a cellular structure called the mitochondria, which is responsible for producing the energy used by brain cells, preliminary research finds.

TUESDAY, Nov. 30 (HealthDay News) -- Reduced use of hormone replacement therapy (HRT) is linked to declines in rates of invasive breast cancer and ductal carcinoma in situ, the most common form of noninvasive breast cancer, a new study reports.

TUESDAY, Nov. 30 (HealthDay News) -- Intensive-care unit patients with hospital-acquired infections have a significantly increased risk of dying, but antibiotic resistance increases their likelihood of death only a small amount, a new study finds.

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

(HealthDay News) -- Here are the latest clinical trials, courtesy of ClinicalConnection.com:

TUESDAY, Nov. 30 (HealthDay News) -- HIV testing in the United States is at a record high, but more than 200,000 Americans are infected and don't know it, a U.S. government report released Tuesday finds.

TUESDAY, Nov. 30 (HealthDay News) -- Using a computer simulation model, researchers say they've determined that relying on "active surveillance" to follow men with low-risk prostate cancer is a "reasonable approach" and alternative to immediate treatment, which can cause unwanted side effects such as incontinence and impotence.

TUESDAY, Nov. 30 (HealthDay News) -- The admonishment to parents to carefully follow the directions on the labels of over-the-counter kids' medicines may be futile, new research suggests.