Skip to Content
Home > Wellness > Health Library > Physical Development, Ages 1 to 12 Months
Babies grow rapidly during the first year of life. Weight,
length, and head circumference measurements are plotted on growth charts to
monitor your baby's growth over time. Most babies:
The soft spots, or
fontanelles, on top of a baby's skull begin to close
at 6 months but won't completely grow together until sometime between the 9th
and 18th month.
When your baby is about 6 months old,
teething may begin. Teeth may not yet break
through the gums at this age, but your baby may drool, chew on objects or
hands, and act fussy from the pressure of new teeth coming in.
is important to keep in mind that each baby is different, and growth patterns
can change between routine well-child checkups. If you have concerns, talk to
your doctor about the many things that can affect your baby's growth. Physical growth requires adequate nutrients and a nurturing
Current as of:
September 6, 2013
John Pope, MD - Pediatrics & Louis Pellegrino, MD - Developmental Pediatrics
How this information was developed to help you make better health decisions.
To learn more, visit Healthwise.org
© 1995-2014 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Our interactive Decision Points guide you through making key health decisions by combining medical information with your personal information.
You'll find Decision Points to help you answer questions about:
Get started learning more about your health!
Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups, and pregnancy.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.