San Francisco - A new study has found that action video games can improve players' eyesight, researchers said Monday.

The study, which was published in the journal Nature Neuroscience, found that the visual processes needed to play games like Call of Duty 2 improved players' contrast sensitivity. Contrast sensitivity allows people to notice different shades and is particularly important for such tasks as driving at night and discerning patterns and facial expressions.

Washington, Mar 30 : Rapid changes in weight during infancy increase children's risk of later obesity, says a new study.

According to a new study led by researchers in the Department of Ambulatory Care and Prevention at Harvard Medical School and Harvard
Pilgrim Health Care, as well as Children's Hospital Boston, rapid weight gain during the first six months of life may place a child at risk for obesity by age 3.

Washington, Mar 30: Mothers of multiples are at an increased risk of having moderate to severe depressive symptoms nine months after giving birth compared to mums of single-born children, says a new study.

Washington, Mar 30 : Diabetics who think they are taking good care of themselves, and have the condition under control, might be mistaken because a new study suggests that constant vigil may not translate into improved blood sugar levels.

Researchers at Duke University surveyed the responses of 1,034 adults on their risk tolerance, concern about their future, and beliefs about their longevity.

Washington, Mar 30 : Scientists have found that a combination of two more efficient applications of biomarkers of heart failure can promise an earlier diagnosis and improved treatment for patients.

Heart failure describes a syndrome of symptoms without a single diagnostic test.

But now, two studies suggest that a combination of two biomarkers may improve diagnosis and prognosis, and form the basis of optimal management of patients with heart failure.

London, Mar 30 : Liquorice, a confectionery flavoured with the extract of the roots of the liquorice plant, may help prevent bowel cancer, a new study has found.

Bowel cancer is the third most common type after breast and lung cancers.

In the study, which was carried out by researchers at Vanderbilt University Medical Centre in Nashville, Tennessee, scientists targeted an enzyme that is thought to play a crucial role in bowel cancer growth.