Child and Adolescent Health and Development

Child and Adolescent Health and Development

Copyright: © John Hogg/World Bank. Further permission required for reuse
  • It takes some 8,000 days for a child to develop into an adult. Sensitive phases shape development throughout this period, and age-appropriate and condition-specific support is required throughout if a child is to achieve full potential as an adult.

  • Investment in health during the first 1,000 days is widely recognised as a high priority, but investments are often neglected in the following 7,000 days of middle childhood and adolescence.

  • At least three phases are crucial to health and development during the next 7,000 days, each requiring a condition-specific and age-specific response.

  • Broadening of investment in human development to include scalable interventions during the next 7,000 days can be achieved cost-effectively. Two essential packages were identified...

  • Well designed health interventions in middle childhood and adolescence can leverage the current substantial investment in education, and improved design of educational programs can improve health.


"A key message of this volume is that human development is a slow process; it takes two decades— 8,000 days—for a human to develop physically and mentally. We also know a proper education requires time. So the world needs to invest widely, deeply, and effectively— across education, health, and all development sectors—during childhood and adolescence. And while individuals may have 8,000 days to develop, we must mobilize our resources today to secure their tomorrow."
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Lancet Article on CAHD

Published online 16 November, 2017


Society and the common legal definition seem to have defined maturity correctly: it takes around 18–21 years for a human being to reach adulthood. The evidence shows a need to invest in the crucial development period... 

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Survival Beyond Age 5



Rate of Survival beyond Five Years of Age

  Source: World Bank indicators. 2016. Education Statistics.

News and Events

DCP3, The Partnership for Child Development (PCD), and the China Development Research Foundation (CDRF) co-hosted a country round table meeting to discuss key policy issues around child and adolescent development from a national perspective.  Held in Beijing, China, the round table meeting brought...
Dr. Donald Bundy, lead editor of the DCP3 Child and Adolescent Development volume, addressed the 34th Annual Meeting of the European Society for Paediatric Infectious Diseases (ESPID) as the keynote speaker in Brighton, UK on May 10 2016.
On Friday, May 20 in Geneva, Switzerland, DCP3 and the WHO-Eastern Mediterranean Regional office hosted a policy forum on child and adolescent health and development, which brought together policymakers and experts to share insights and perspectives in order to enhance the relevance and usability...

Volume Editors

Donald Bundy

Donald Bundy
London School of Hygiene and Tropical Medicine

Susan Horton

Susan Horton
University of Waterloo, School of Public Health and Health Systems

Dean Jamison

Dean Jamison
University of Washington, Department of Global Health

George Patton

George Patton
Murdoch Childrens Research Institute