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Everything exhausting about nutrition research — we handle it.

01

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Thousands of clinical guidelines and peer-reviewed studies from the AAP, WHO, CDC, and other leading health bodies — not blogs, not influencers.

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05

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allnutrition.info
How much vitamin D does a breastfed newborn need?
Evidence-based answer

Breastfed newborns need 400 IU (10 mcg) of vitamin D daily, starting within the first few days of life. Continue until they're getting at least 1 liter of vitamin D-fortified formula or milk daily.

Strong evidence
High consensus
Sources used (2)
AAPClinical Guideline

"The American Academy of Pediatrics recommends 400 IU of vitamin D supplementation beginning in the first few days of life for all breastfed infants."

94trust
CDCPublic Health Guidance

"Breast milk alone does not provide infants with an adequate amount of vitamin D… Most breastfed infants will need an additional source of vitamin D."

91trust

Where the evidence comes from

Names you'd recognize
from a doctor's office.

Health authorities & guidelines

American Academy of Pediatrics
World Health Organization
CDC
USDA Dietary Guidelines
European Food Safety Authority
Academy of Nutrition & Dietetics
National Institutes of Health
UNICEF

Peer-reviewed journals

Pediatrics
The American Journal of Clinical Nutrition
The Lancet
JAMA Pediatrics
British Journal of Nutrition
Nutrients
Journal of Nutrition
BMJ
Research Digest

What the research
says this week.

All digests
May 27, 2026

Beyond Weight: Nutrition, Metabolism, and Microbiome Breakthroughs

This edition explores groundbreaking research revealing how our dietary choices influence everything from cancer recovery and cardiovascular risk to a newborn's body fat. Readers will discover the hidden dangers of unnecessary supplements, the reassuring truth about intermittent fasting, and wild food science innovations like probiotic ice cream. Ultimately, these diverse findings underscore the profound impact that targeted nutrition, gut health, and metabolic balance have on our long-term health and longevity.

Nutrition research, delivered.

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