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Federal health officials confirmed four people in three states have died from the bacterial infection listeria, traced to contaminated cantaloupe from a Colorado farm. Dr. Jennifer Ashton reports

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

"Early Show" medical correspondent Dr. Jennifer Ashton talks to Erica Hill and Chris Wragge about the risk factors for osteoporosis and what you can do to minimize them.

Dr. Jennifer Ashton answers questions about getting rid of excess belly fat, stemming chronic migraines, and tips for chronic lung issues.

Dr. Jennifer Ashton profiles the survival story of one lucky college student who lost her legs and fingers to meningitis, a disease that can be easily prevented with a vaccine.

CBS News medical correspondent Dr. Jennifer Ashton answers health questions from viewers. This week: dementia, allergies and sleep issues.

"Early Show" medical correspondent Dr. Jennifer Ashton reports on a new procedure for asthmatics called bronchial thermoplasty.

Government health advisers laid out a plan for testing all newborn babies for a life-threatening heart problem.

Dr. Jennifer Ashton reports on a simple test that screens for congenital heart defects in infants and why it isn't routinely used in the U.S.

Hospitals are reporting severe shortages of many key medications, including some for cancer. Rebecca Jarvis speaks with CBS News Medical Correspondent, Dr. Jennifer Ashton about why these shortages exist and how best to navigate around them

Dr. Jennifer Ashton discusses critical shortage of many types of medications, including some used in ICU and for chemotherapy

On Today's Ask It Early, CBS Medical Correspondent, Dr. Jennifer Ashton, answers questions about the blood type diet, cardio, and back pain issues.

A breakthrough procedure for partial knee replacements is making it possible for some patients to be back on their feet and nearly pain free after just one day. Dr. Jennifer Ashton reports

A new study suggests that a child with an autistic older sibling will develop the disorder.

CBS News medical correspondent Dr. Jennifer Ashton answers questions about jet lag, menopause and vitamin supplements