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AP - Some of Baxter International's recalled blood thinner heparin contained large amounts of a contaminant that might explain hundreds of serious side effects. And the government said Wednesday it's investigating whether what appears to be a fake ingredient got there by accident or by fraud.

Sen. Kennedy returns to work after June surgery (Reuters)

Psychological Counseling Boosts Breast Cancer Outcomes (HealthDay)

Medicare wants limits for weight loss surgery (Reuters)

Magnesium impacts calcium's anti-cancer effect (Reuters)

Obese kids have prematurely aged neck arteries (Reuters)

Family history can trump breast cancer gene test (AP)

Clinical Trials Update: Nov. 17, 2008 (HealthDay)

Fewer Brain 'Tangles' May Mean Smarter Old Age (HealthDay)

Doctors hoping for new era of artificial ankles (AP)

Counseling on alcohol key to teens' sexual health (Reuters)

Group therapy may extend lives of cancer patients (Reuters)

Study: Vitamin C or E pills do not prevent cancer (AP)

Vitamins C and E fail in cancer prevention study (Reuters)

Burlington, Vt., is healthiest city, CDC says (AP)

W. Virginia town shrugs at poorest health ranking (AP)

Sharp-witted elderly shed insight on dementia (Reuters)

Florence Wald, leader in US hospice, dies at 91 (AP)

Australian scientist to unveil skin cancer vaccine: reports (AFP)

Despite failures, search for obesity drugs still looks golden (AFP)

Deaths uncounted in China's tainted milk scandal (AP)