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Blood transfusion
A blood transfusion can help replace blood lost due to surgery or injury. It also can help if an illness prevents your body from making blood correctly.
COVID-19: Who's at higher risk of serious symptoms?
Advanced age and some health conditions can raise the risk of serious COVID-19 (coronavirus disease 2019) illness.
Cancer
Find out the basics about cancer, including symptoms, causes and treatments. Learn steps you can take to prevent cancer.
Cancer causes: Popular myths about the causes of cancer
Get the facts and find out why these popular myths about cancer causes are wrong.
Cancer prevention: 7 tips to reduce your risk
Real-life ways to reduce your risk of cancer.
Cholestasis of pregnancy
This liver condition can occur late in pregnancy, triggering intense itching. The risk of complications for your baby may require early delivery.
Cirrhosis
This advanced stage of liver damage often shows no symptoms until it's quite serious. Find out about symptoms and treatment of this life-threatening liver condition.
Cold urticaria
Learn more about the symptoms and treatment of this allergic skin reaction caused by cold that most often affects young adults.
Compulsive sexual behavior
Also called sexual addiction, this means being obsessed with sexual fantasies, urges, or behaviors that disrupt your life or cause harm to you or others.
Convalescent plasma therapy
Convalescent plasma therapy uses blood from people who've recovered from an illness, such as COVID-19, to help others recover.
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