The first 1,000 days of a child’s life - from conception to their second birthday - are a time of rapid brain development, emotional bonding, and physical growth that lays the foundation for lifelong health, wellbeing, learning and early childhood development. 

As early years professionals, we’re in a unique position to positively influence this crucial period - not just through the care we give, but through the support, information, and encouragement we offer to families. 

Whether you’re caring for babies, toddlers, or supporting new parents in your setting, understanding the importance of the first 1,000 days can help you shape experiences that truly change lives. 

So, What Happens in the First 1,000 Days of early childhood development? 

The science is clear: during this period, a baby’s brain forms more than a million new neural connections every second! These connections are influenced by nutrition, relationships, environment, and sensory experiences. 

• By age 2, a child’s brain reaches 80% of its adult size. 
• Emotional attachments form that help shape social responses, stress regulation, and future resilience. 
• Speech, mobility, and cognitive skills begin to take root. 

This window offers a powerful opportunity – but also a risk. If children experience poor nutrition, toxic stress, lack of stimulation, or inconsistent care during this time, it can affect their long-term outcomes. Thankfully, high-quality early years provision can act as a buffer and a boost. 

Practical Ways to Support the First 1,000 Days of Early Childhood Development in Your Setting 

1. Prioritise Attachment and Connection

Consistent, responsive caregiving is essential for building trust and emotional security during early childhood development. 

• Assign key people to babies and toddlers wherever possible to provide predictability. 
• Use soothing tones, eye contact, and gentle touch to help babies feel safe. 
• Learn each child’s cues - how they express hunger, tiredness, or overstimulation - and respond quickly. 

Tip: Create “All About Me” sheets with parents to better understand each baby’s rhythms, likes, and calming methods. 

2. Focus on Nutrition and Routine

Healthy nutrition fuels both physical and brain development. While parents provide the bulk of food during the first 1,000 days, you can play a supporting role. 

• Support safe weaning and model positive eating behaviours at mealtimes. 
• Be aware of allergy risks, iron-rich foods, and hydration needs. 
• Establish consistent sleep, feeding, and activity routines in line with home routines. 

Tip: Encourage open dialogue with parents about feeding choices - whether breast, bottle, or solids - with no judgement. 

3. Stimulate the Senses, Gently

From tummy time to treasure baskets, babies and toddlers learn through movement and sensory input. However, remember that overstimulation can be overwhelming. 

• Offer open-ended, natural materials to explore safely. 
• Create calm, cosy spaces as well as active areas. 
• Let children take the lead - follow their gaze, cooing, or curiosity. 

Tip: Use a running commentary approach: “You’re holding the soft scarf… that feels tickly, doesn’t it?” This boosts brain connections and early language. 

4. Promote Early Language from Birth

Even before babies speak, they’re laying the groundwork for communication. 

• Speak to babies often - during nappy changes, bottle feeds, or playtime. 
• Use repetition, simple words, and real expressions. 
• Sing songs, read picture books, and play sound games every day. 

Tip: Mirror babies’ babbles and respond as if you’re having a real chat. It teaches turn-taking and language rhythm. 

5. Watch for Early Childhood Development Delays or Concerns

The earlier any early childhood development concerns are noticed, the more support children can receive. 

• Track early years development progress with sensitivity - not every child hits milestones at the same time. 
• Discuss any concerns calmly and supportively with parents. 
• Refer to your setting’s SENCO or health visitor network if needed. 

Tip: Keep notes and observations over time - parents may not see day-to-day changes, so your insight is invaluable. 

Supporting Parents During This Time 

Parents are the most important people in a child’s first 1,000 days. But many feel overwhelmed, anxious, or unsure - especially if it’s their first child. 

As a trusted early years practitioner, you can provide calm, non-judgemental support: 

- Build Relationships 

Take time to greet parents warmly and ask how things are going at home. A quick chat at drop-off can build lasting trust. 

- Share Knowledge Gently 

Offer leaflets, visual charts, or WhatsApp messages with simple insights about sleep, feeding, development, or play. 

- Encourage Play at Home 

Suggest easy activities parents can do at home - like singing a song at bathtime or describing what they see on a walk. 

- Signpost to Services 

If families need extra help - be it breastfeeding support, speech and language referrals, or mental health resources - be ready to guide them to the right place. 

Tip: Remember that encouragement goes a long way. Hearing “you’re doing a great job” can mean everything to a tired parent. 

A Wider Impact: From Early Years Development in Nurseries to National Change

Investing in the first 1,000 days doesn’t just benefit individual children - it impacts society as a whole. 

According to UNICEF and the NHS, children who receive nurturing care in this window are more likely to: 

• Achieve well in school 
• Maintain better physical and mental health 
• Form healthy relationships 
• Become resilient adults 

In the early years sector, we often talk about giving children “the best start in life.” Supporting the first 1,000 days is one of the most powerful ways to make that happen. 

Final Thoughts 

The first 1,000 days are often called “a golden window” - a time when everything we do matters a little more. 

In early years development, we have a privileged role: to care for babies and toddlers with love, to empower parents with kindness, and to lay down the building blocks for a brighter, healthier future. 

So, whether you're rocking a baby to sleep, celebrating a first word, or comforting a new parent who’s had a sleepless night - know this: your work matters, every single day. 

Let’s make the most of the first 1,000.