What it is
About 60% of term newborns develop visible jaundice in the first week. Most is 'physiologic' — the liver simply hasn't ramped up. Risk factors for higher levels include ABO or Rh incompatibility, prematurity, bruising from birth, exclusive breastfeeding with slow feeding, and East Asian ancestry. The AAP updated its bilirubin thresholds in 2022; phototherapy starts at higher levels than the older 2004 chart. Warning signs at home: deep yellow skin extending to the belly or legs, sleepy hard-to-wake baby, poor feeding, high-pitched cry.
Evidence review links
Each link opens the full review on the publisher's site in a new tab.
Possible benefits
- Routine bilirubin checks (transcutaneous or blood) before discharge catch most at-risk babies[American Academy of Pediatrics↗]
- Phototherapy is safe, non-invasive, and prevents kernicterus[American Academy of Pediatrics↗]
- Frequent breastfeeding (8–12 times/day) helps the baby clear bilirubin through stool[American Academy of Pediatrics↗]
Possible risks
- Untreated severe jaundice can cause acute bilirubin encephalopathy and permanent brain injury (kernicterus)[American Academy of Pediatrics↗]
- Phototherapy requires separation from parent for feeds only, temporary eye shields, and can affect feeding rhythm[American Academy of Pediatrics↗]
- Home phototherapy blankets are an option for many but not all cases[American Academy of Pediatrics↗]
Alternatives
- Frequent effective breastfeeding + sunlight (indirect, through a window) for mild cases as directed by pediatrician[American Academy of Pediatrics↗]
- Home phototherapy blanket for eligible babies[American Academy of Pediatrics↗]
- Exchange transfusion — reserved for severe, dangerous levels[American Academy of Pediatrics↗]
Current evidence
The 2022 AAP Clinical Practice Guideline on hyperbilirubinemia raised phototherapy thresholds and emphasizes universal pre-discharge screening plotted on a nomogram with risk factors.
Where the evidence is clear · where people may choose differently
For most topics, guidelines from ACOG, WHO, and other major bodies broadly agree on the core safety points (when to act in an emergency, informed-consent standards, monitoring baselines). Where reasonable people — and even guidelines — differ tends to be around thresholds (when to start or stop something), preferences (comfort, environment, support), and values (how you weigh small risks against benefits). Use the questions below to explore those pieces with your care team.
Educational only. Your care team can help you weigh what applies to your specific situation.
Related evidence topics
- Newborn Weight Loss and Feeding in the First DaysBabies normally lose 5–7% of birth weight in the first days and regain it by ~10–14 days. Knowing what's expected — and what isn't — reduces panic and helps you catch true feeding problems early.
- Breastfeeding, Latch & Medication SafetyWhere to look for evidence-based lactation support and how to check whether a medication is compatible with breastfeeding.
- Normal Variations in Labor and the First DaysA running list of things that surprise or worry many people but are usually within the normal range — so you know what's expected and what's worth calling about.
Questions to ask your care team
- ?What was the pre-discharge bilirubin level and how does it compare to the treatment line?
- ?When should the baby be re-checked — 24 hours after discharge?
- ?What color / behavior changes should trigger a call today vs. tomorrow?
- ?Is home phototherapy an option for us?
Universal questions (works for any decision)
A short BRAIN-style set you can bring to any conversation about interventions, monitoring, or care decisions.
- ?Why are you recommending this now — is it urgent, routine, or optional?
- ?What happens if we wait an hour (or longer) before deciding?
- ?What signs would tell us this is working — or that we need to change course?
- ?What are the alternatives, including doing nothing?
- ?What would you recommend if this were your family?
- ?What would change your recommendation?
Sources & provenance
Tap a source to open the original guideline or review in a new tab.
Plain-language paraphrase. Re-verify before publish.
Last reviewed: 2026-07-03
Further reading — canonical references
Read the source material directly. Each link opens the publisher's own current guidance in a new tab — cross-check what we summarize against what they say.
Tier 1 · Clinical guidelines
Tier 2 · Systematic reviews
Tier 3 · Childbirth-specific
Educational only. Guidelines evolve — the linked publisher pages will reflect newer guidance than any static snapshot.
Version history — v1.0.0
v1.0.0 · 2026-07-03 · LlaMamma editors
Initial jaundice topic.
New guidance from ACOG, WHO, Evidence Based Birth, or other listed sources is recorded here and can be updated remotely without a new app release.