Preschoolers
Learning Center
Thumb sucking: Help your child break the habit
Find out when and how to help your child stop thumb sucking.
Ankylosing spondylitis
Learn about this inflammatory disease that can cause some of the vertebrae in the spine to fuse over time.
Feminizing surgery
Find out how feminizing surgical procedures can help better align the body with a person's gender identity.
Blood donation
Find out what to expect during blood donation and how your blood will be used to help others.
Child sleep: Put preschool bedtime problems to rest
When a child has trouble sleeping, a gentle but firm bedtime routine is often the key to a good night's rest.
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.
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.
Masculinizing surgery
Find out how masculinizing surgical procedures can help better align the body with a person's gender identity.
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