A new study suggests that among healthy adults with a habitual sleep duration of at least 6.5 hours, late sleep timing was associated with higher fast food consumption and lower vegetable intake, particularly among men, as well as lower physical activity.

Results show that late sleep timing is associated with lower body mass index and is not associated with total caloric intake; however, it remains associated with poorer diet quality, particularly fast food, vegetable and dairy intake.

UK researchers say they have found a new way to tell if a heart attack is more severe and might cause lasting harm - by looking for bruising or bleeding in the heart muscle.

Patients with this sign on scans more often develop serious problems like heart failure, says the Glasgow team, according to BBC.

Heart failure can leave people unable to do simple everyday tasks, such as climbing the stairs.

Symptoms occur because the damaged heart doesn't have enough strength to pump blood around the body efficiently.

Men who reported permanent stress have a significantly higher risk of developing type 2 diabetes than men who reported no stress. This is the finding of a 35-year prospective follow-up study of 7,500 men.

Using this unique material, researchers are now able to show that permanent stress significantly increases the risk of type 2 diabetes.

Of the total sample, 6,828 men without any previous history of diabetes, coronary artery disease or stroke were analysed. A total of 899 of these men developed diabetes during the follow up.

People who eat nuts, particularly walnuts, are more likely to live longer, finds research. In a study, researchers suggest that those who eat nuts more than three times a week have a reduced risk of dying from cancer or cardiovascular disease than non-nut eaters.

The research study the effect on the primary prevention of cardiovascular disease of over 7000 older people (aged 55 to 90) randomized Diet supplemented with extra virgin olive oil or nuts, compared to a control group following a low fat diet. People who ate nuts tended to have a lower BMI and smaller waist. They were also less likely to smoke and were more physically active than those who rarely or never ate nuts. Nut eating was associated with a better diet in general as these people ate more vegetables, fruit and fish.

At one point in the year, almost 80 percent of teens in a UK study had insufficient vitamin D that should come from sun exposure, and one quarter had insufficient levels even at the peak of summer, according to a new study.

The results were surprising because the participants were white children, whose skin is the most sensitive to ultraviolet-B and who therefore need the least amount of sunlight exposure to get enough vitamin D, said senior author Lesley E. Rhodes of the University of Manchester in the U.K, according to Reuters.

Most vitamin D is synthesized in the skin after exposure to UVB rays from the sun, Rhodes and colleagues write in the Journal of Clinical Endocrinology and Metabolism.