Vitamin D Deficiency Linked to Diabetes, Metabolic Syndrome in Studies

SATURDAY, June 19 (HealthDay News) -- A pair of new studies has uncovered evidence that low levels of vitamin D could lead to poor blood sugar control among diabetics and increase the risk of developing metabolic syndrome among seniors.

Higher Testosterone Tied to Heart Trouble in Older Men

SUNDAY, June 20 (HealthDay News) -- Among older men, having a high testosterone level is associated with a raised risk of heart disease or a heart attack, new research suggests.

PCBs May Weaken Kids' Vaccination Response

SUNDAY, June 20 (HealthDay News) -- Children exposed early in life to polychlorinated biphenyls (PCBs) may have a reduced immune response to tetanus and diphtheria vaccines, a new study indicates.

Obesity Not Always a Sentence for Heart Disease

SATURDAY, June 19 (HealthDay News) -- For a small number of obese people, those extra pounds do not condemn them to heart disease or diabetes, Dutch researchers report.

'Junk Food' Sugar May Help Some Fat Cells Proliferate

SUNDAY, June 20 (HealthDay News) -- New research suggests that the ubiquitous sugar known as fructose may cause certain fat cells in children to multiply faster, which might play a key role in childhood and adult obesity.