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Infant Birth Weight

Summary of Infant Birth Weight

Primary Information, Benefits, Effects, and Important Facts

Scientific Information on Infant Birth Weight


Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect infant birth weight
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Outcome Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-b Fish Oil Minor Very High See 2 studies
There appears to be an increased infant birth weight in mothers that consume fish oil (or fish weekly) relative to no fish oil intake. Although earlier studies have suggested this may due to prolonging pregnancy, a recent RCT found an increase in birth weight independent of gestational age.

All comparative evidence is now gathered in our ​A-to-Z Supplement Reference.

The evidence for each separate supplement is still freely available ​here.