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Too much sitting can increase your risk of sudden death.

Does stress make us sick? CBS News medical correspondent Dr. Holly Phillips reports on a new study that suggests high stress is linked to a higher risk of heart disease, influenza and allergies.

After suffering a total of five heart attacks in his lifetime, Dick Cheney received a heart transplant at the age of 71. Jeff Glor spoke with CBS News medical correspondent Dr. Jon LaPook on what the surgery could mean for the former vice president's health

Charlie Rose and Erica Hill speak with medical correspondent Dr. Jon LaPook about a study that found grieving puts you at a higher risk for heart attack.

"Early Show" medical correspondent, Dr. Jennifer Ashton, answers viewers' questions on everything from how to soothe aching feet, to combating work stress, to correcting poor oral health.

New research shows getting called back for false positives on a mammogram is part of the process. "Early Show" medical correspondent Dr. Jennifer Ashton explains why this is happening

CBS News medical correspondent Dr. Jennifer Ashton answers viewer questions on everything from torn knee ligaments, to keeping your dry hands smooth, to getting your child to stop sucking their thumb.

New research has found a link between dietary supplements and a slightly increased risk of death in older women. Erica Hill and Chris Wragge talk to CBS News medical correspondent Dr. Jennifer Ashton.

An independent panel has concluded that a blood test used to diagnose prostate cancer is not worth its risks.

Erica Hill and Jeff Glor talk to "Early Show" medical correspondent Dr. Jennifer Ashton about the potential health consequences of a trend that has parents spacing out their children's vaccinations.

"The Early Show" medical correspondent Dr. Jennifer Ashton answers viewer health questions about energy drinks, diabetes and more

CBS News medical correspondent Dr.

A landmark study on cancer in the U.S. is showing where we stand in the fight against the country's No. 2 killer.

Matchingdonors.com is part of a growing number of living donor websites being used as an alternative to the government's national donor list.

Postmenopausal osteoporosis is a disease that weakens the bones over time, making them more likely to break. CBS News Medical Correspondent, Dr.