Arthritis & Rheumatism

Joint replacement surgery, arthritis are not inevitable

Don't worry about your hips or knees as you age. Arthritis in those joints isn't inevitable. Keep doing the activities you enjoy. Those hopeful words come from Rafael Sierra, M.D., an orthopedic surgeon at Mayo Clinic specializing ...

Medical research

Lab-grown human 'embryos' offer new research hope

Scientists have developed human embryo-like structures without using sperm, an egg or fertilization, offering hope for research on miscarriage and birth defects but also raising fresh ethical concerns.

Cardiology

Q&A: What is cardiac arrest?

I've heard about several people who have experienced sudden cardiac arrest. What is cardiac arrest? And how is it different from a heart attack? What do you do for someone who has this condition?

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