Low Birth Weight

Written by:

•Last Updated: November 20, 2025

Low birth weight refers to babies who are born weighing less than 5 pounds, 8 ounces (2.5 kilograms). Premature birth is the most common cause of low birth weight.

Written by:

Last Updated:November 20, 2025

Research Snapshot

19,281 participants in trials and 5 meta-analyses

Examine Evidence Grades

BInfant Birth Weight + 4 more

D4 outcomes

Examine Database: Low Birth Weight

Intervention	Health Outcome	Evidence
Folic Acid (Vitamin B9)	2 outcomes	9 Studies
Fish Oil	2 outcomes	5 Studies
Iron	3 outcomes	2 Studies
Zinc	2 outcomes	17 Studies

Folic Acid (Vitamin B9)

2 outcomes

Fish Oil

2 outcomes

Iron

3 outcomes

Zinc

2 outcomes

Low Birth Weight

Examine Database: Low Birth Weight

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