(HealthDay News) -- Knee replacement surgery may be a solution for disabling arthritis, pain caused by other medical problems, or a tumor affecting the knee.

(HealthDay News) -- If you've got diabetes, staying on a regular eating schedule will help you maintain better glucose control.

TUESDAY, Aug. 24 (HealthDay News) -- Breakdowns in brain connections may be the reason why your physical response times slow as you age, a new study has found.

TUESDAY, Aug. 24 (HealthDay News) -- Scientists have discovered a link between vitamin D and genes related to autoimmune diseases and cancer.

TUESDAY, Aug. 24 (HealthDay News) -- While the debate over the possible health benefits of drinking continues to bubble, a new study finds that abstainers and heavy drinkers have a higher mortality risk than moderate drinkers.

TUESDAY, Aug. 24 (HealthDay News) -- Pregnant women who take antiviral drugs against the herpes virus should not worry that their use will cause birth defects, Danish researchers report.

TUESDAY, Aug. 24 (HealthDay News) -- Could drinking one or more artificially sweetened, carbonated diet sodas a day boost a woman's odds of premature delivery? A new study from Denmark suggests such a link.

TUESDAY, Aug. 24 (HealthDay News) -- Patients who chose to have a special pump placed in their heart's aorta before undergoing procedures to open blocked arteries didn't have improved outcomes, new research shows.

MONDAY, Aug. 23 (HealthDay News) -- The fate of fishermen involved in cleaning up a massive oil spill off the northwest coast of Spain in 2002 could shed light on potential health problems facing workers involved in the recent Deepwater disaster in the Gulf of Mexico.

TUESDAY, Aug. 24 (HealthDay News) -- People who suffer migraines with aura are at increased risk of dying from heart disease and stroke, but the individual risk for a migraine sufferer is low, two new studies show.

TUESDAY, Aug. 24 (HealthDay News) -- Patients who have a heart transplant to correct the most common type of genetic heart disease -- hypertrophic cardiomyopathy -- have better long-term survival rates than those who have transplants for other heart diseases, a new study finds.

TUESDAY, Aug. 24 (HealthDay News) -- Nicotine may directly promote the development of breast cancer by binding to a certain cell receptor, says a new study.

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, Aug. 24 (HealthDay News) -- U.S. scientists are reacting with dismay to Monday's decision by a U.S. judge to halt any expansion of stem cell research using federal funds.

TUESDAY, Aug. 24 (HealthDay News) -- Adding therapy to the medications an adult might be taking for attention-deficit/hyperactivity disorder (ADHD) could lessen symptoms and improve quality of life, new research suggests.

TUESDAY, Aug. 24 (HealthDay News) -- A new study finds that the risk of heart attacks or death after taking the glucose-lowering diabetes drugs Avandia and Actos are about the same.