Diet and exercise
Learning Center
Weight loss: Better to cut calories or exercise more?
Understand how calorie restriction and exercise help you meet weight goals.
Exercise for weight loss: Calories burned in 1 hour
Trying to lose weight or at least not gain more? Find out how many calories are burned by an hour walking, swimming or using the elliptical.
Feminizing surgery
Find out how feminizing surgical procedures can help better align the body with a person's gender identity.
Ankylosing spondylitis
Learn about this inflammatory disease that can cause some of the vertebrae in the spine to fuse over time.
Blood donation
Find out what to expect during blood donation and how your blood will be used to help others.
Multiple sclerosis
This nervous system disorder causes a range of symptoms — and while there's no cure, it's possible to have long periods of remission.
Different types of COVID-19 vaccines: How they work
Find out how different COVID-19 vaccines cause your body to create antibodies that will fight the COVID-19 virus.
Walking: Is it enough for weight loss?
Walking and a healthy diet can put you on the path to weight management.
Masculinizing surgery
Find out how masculinizing surgical procedures can help better align the body with a person's gender identity.
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