Infant health
Learning Center
Infant formula: 7 steps to prepare it safely
Properly preparing and storing infant formula is essential for your baby's nutrition.
Infant development: Milestones from 7 to 9 months
Milestones for most 7- to 9-month-old infants include improved motor and language skills.
Infant development: Milestones from 4 to 6 months
Milestones for most 4- to 6-month-old infants include increased alertness and evolving motor skills.
Infant development: Milestones from 10 to 12 months
Budding curiosity drives infant development between ages 10 and 12 months.
Infant constipation: How is it treated?
Worried about infant constipation? A Mayo Clinic specialist explains how to treat it.
How do COVID-19 antibody tests differ from diagnostic tests?
Antibody testing shows whether you've had the COVID-19 virus in the past. It's not the same as testing to see whether you have the virus now.
Holter monitor
This wearable device keeps track of the heart's rhythm during daily activities. Learn when you might need one and what to expect.
Hodgkin's vs. non-Hodgkin's lymphoma: What's the difference?
Learn how types of lymphomas are determined using lab tests to examine cancer cells.
Hematocrit test
Learn about this red blood cell blood test, including why it's used and what to expect.
Hemangioma
This red mark on a baby's skin looks like a rubbery bump or flat red mark and is made up of extra blood vessels in the skin. It generally goes away by age 10. Learn more about its causes and treatment.
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