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A vaccine is a preventive treatment for certain medical diseases. These are diseases that are caused by infections and spread from person-to-person. Vaccines contain a weakened version of the infec...

Exercise is an important part of a healthy, active lifestyle. It improves your heart and lungs and builds strong bones and muscles. However, exercise can cause sore muscles. This is common if you t...

Our health is influenced by a series of elements including biology, access to and quality of medical care, the environment in which we live, work, and play, and individual behaviors. Other factors ...