Chest pain can be a scary symptom – it's not always serious, but it can be a symptom of having a heart attack. Look out for ...

There are many possible causes of ear pain, including infection, allergies, wax buildup, swimmer's ear, or a ruptured ear drum.

High cholesterol typically doesn't cause any symptoms. In the majority of cases, the only symptoms it may cause are emergency events.

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Caffeine can kick start your senses within 15 minutes. See exactly what caffeine does to your body with this interactive graphic.

View the latest from the world of psychology: from behavioral research to practical guidance on relationships, mental health and addiction. Find help from our directory of therapists ...