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Last Updated - August 7, 2023

Baby’s brain development

The brain grows steadily during pregnancy and is about a quarter developed at birth.

  • Amazing growth takes place in infancy – it takes just seven minutes for the synapses of each neuron to form. By three years of age there are trillions of connections – twice as many as an adult has. But only those that are used regularly will remain.
  • A young child’s emotional, social and intellectual development is very rapid. Experiences shape the brain’s architecture, as the underused neural pathways are pruned away.
  • The root of many adult conditions can be traced to early childhood experiences and affect the future programming of physiological functions.
  • The development of neural pathways is influenced by genes, blood supply, hormone levels, and the physical and socio-emotional environments.

Did you know

  • Babies are born with over 100 billion brain cells.
  • Early years are crucial; the brain is 25% developed at birth and 80% developed by age three.
  • Positive stimulation will build strong neural pathways.
  • Physical, emotional and social development are all important.
  • Simple things repeated help these pathways to strengthen.

Positive relationships, play and creative activities aid brain development.

Your baby’s brain:

  • Reptilian brain
  • Mammalian brain
  • Higher brain

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