Skip to Content

Physical Development, Ages 12 to 24 Months

Topic Overview

Your child's physical growth during the second year, although considerable, is less rapid than during the first year. In the second year, toddlers gain an average of3 lb (1.4 kg) to5 lb (2.3 kg) and grow an average of 3 in. (7.6 cm) to5 in. (12.7 cm). Normal and expected physical growth requires adequate nutrients and a nurturing environment.

As toddlers start to walk and become more active, they develop leaner and more muscular arms and legs and lose fat around the face and tummy. They also lose some of their baby look.

In the second year, the molars usually begin to come in. These large and flat teeth may cause your toddler pain before and while they are erupting through the gum tissue. This may cause irritability, disrupt sleep patterns, and change your toddler's behavior. For more information about tooth eruption, see the topic Teething.

Credits

ByHealthwise Staff
Primary Medical ReviewerSusan C. Kim, MD - Pediatrics
Kathleen Romito, MD - Family Medicine
Specialist Medical ReviewerLouis Pellegrino, MD - Developmental Pediatrics

Current as ofMay 4, 2017

This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use and Privacy Policy. Learn how we develop our content.

© 1995-2018 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.

Symptom Checker

Feeling under the weather?

Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.

Symptom Checker

Decision Points

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:

Interactive Tools

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.

Health Library