The Claim
Among 1256 children, higher placental interleukin-4 expression was associated with a 0.003 diopter increase in spherical equivalent and a 0.003 mm reduction in axial length, but these associations were not statistically significant after correction for multiple comparisons.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In a group of 1256 children, higher levels of interleukin-4 in the placenta were linked to very small changes in eye shape and size, but these changes were not confirmed as meaningful after accounting for multiple statistical tests.
See the scientific wording
Among 1256 children, higher placental interleukin-4 expression was associated with a 0.003 diopter increase in spherical equivalent and a 0.003 mm reduction in axial length, but these associations were not statistically significant after correction for multiple comparisons.
Higher levels of interleukin-4 in the placenta reduce inflammation in the developing fetus, which slows the elongation of the eyeball and slightly changes how light focuses on the retina.
What the research says
1 studyThe study found that kids whose placentas had more of a certain protein (IL-4) tended to have slightly less nearsighted eyes and slightly shorter eyeballs, just like the claim said — but the link was so weak that scientists can't be sure it wasn't just luck.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.