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Ever wondered why your doctor suggests a certain lab test? Learn about more than 100 common lab tests, such as the blood glucose test, complete blood count, and vitamin D test. Look up what a test may be used for, and what the results may mean.

NIH’s Cancer Fact Sheets answer common questions about more than 70 topics in cancer, including specific cancer types, prevention, detection, treatment, and possible causes. The fact sheets are available in English and Spanish. They are updated and revised based on the latest cancer research.

Have you ever wondered who takes part in clinical research studies? Clinical research is medical research that involves people just like you. Hear personal stories from volunteers and researchers who are helping others and moving science forward.

Your liver is an important part of your digestive system. A liver that isn’t working properly can lead to health problems. Viruses, drugs, and alcohol can harm the liver. Learn more about these and other causes of liver disease.

Do you struggle to lose weight? Being overweight or obese increases your risk of type 2 diabetes, heart disease, stroke, fatty liver disease, kidney disease, and other health issues. Discover tips and tools to help you lose weight and keep it off.

Follow NIH on Facebook, Twitter, Instagram, Pinterest, and more! You can also sign up for health newsletters that interest you to keep up with the latest. Or, watch videos and listen to podcasts on our YouTube and iTunes channels.

Research is changing our understanding of mental health conditions. Learn about different mental health topics, such as eating disorders, suicide prevention, and traumatic events. Find out how often mental health conditions occur, what the treatment options are, and how to get help for yourself or someone you know.

Learn about cutting-edge health care technologies and how NIH-supported researchers are improving them. Topics include tissue engineering, biomaterials, sensors, and more. You can get an app to discover how medical scans work. Another can take you inside a surgery room of the future.

Cancer and its treatment can change how you feel about yourself and how you live each day. Learn how to manage the emotions and handle common family issues. Discover how to adjust to the life changes cancer brings and how to plan for care after cancer treatment.

Making the move to heart-healthy eating can help lower your risk for heart disease and other conditions. Need help starting a healthy eating plan? Find tips for shopping, cooking, and eating healthy. And check out more than 100 recipes. You can even save favorites to your own personalized recipe box on the site.