What are the first 1,000 days, and why do they matter so much?

You’ve likely heard the phrase without the explanation. Here’s what the first 1,000 days actually means, and what the research does, and doesn’t, say about it.
You are not a project manager for your baby.

Trackers, charts, apps, comparisons. Here’s why the constant managing might be dysregulating your nervous system, and how that affects your baby’s development. The science of why presence matters more than tracking.
Why the first 1,000 days feel so hard in the modern world.

It’s not that you’re less capable than mothers before you. Here’s what actually changed, and why it isn’t your fault.
The one thing the first 1,000 days research keeps confirming: you are the intervention.

Across the nutrition research, the neuroscience, and the psychology, one finding keeps repeating: it’s the caregiver, not the method, doing the real work.
The first forty days: a different kind of fourth trimester

On rest, warmth, and being mothered while you mother.