The sudden death of a child over 12 months that remains unexplained after a thorough investigation.

What is Sudden Unexplained Death in Childhood (SUDC)?

THE ATLAS PROJECT WAS FOUNDED BY THE PARENTS OF ATLAS WHO WAS TAKEN DUE TO SUDC

What we know about Unexplained Death in Childhood (SUDC)

SUDC not a diagnosis

It is a category of death — one that currently eludes scientific understanding. By definition, the cause is unknown.

400-450 losses

In the United States, approximately 400–450 children are lost to SUDC every year. Most are toddlers between the ages of 1 and 4. Most were healthy. Most died during sleep.

SUDC vs SIDS

SIDS refers to the sudden, unexplained death of a baby under 12 months of age. It has been studied extensively for decades, and while a definitive cause remains unknown, safe sleep practices have been shown to reduce risk.

SUDC is less researched

SUDC refers to the sudden, unexplained death of a child over 12 months of age. It is far less researched and far less funded. Unlike SIDS, no prevention strategies have yet been identified for SUDC.

UNIMAGINABLE GRIEF WITH NO ANSWERS

Both SUDC & SIDS are devestating & both leave families without answers.

But SUDC has received a fraction of the awareness, research funding, and public attention that SIDS has — and that's something The Atlas Project is working to change.

SUDC can't yet be predicted or prevented. But the science is moving forward — and foundations like ours exist to support that progress and make sure families aren't left behind.

SUDC STATISTICS

418 Children in the U.S. were affected by sudden unexplained death in 2024

Children ages

1-4 years

Children ages

5-9 years

Children ages

10-14 years

Children ages

15-19 years