Finger ratio may hint at origins of Double-Jointedness
NCT ID NCT07157930
First seen Nov 01, 2025 · Last updated Apr 29, 2026 · Updated 21 times
Summary
This study looked at 180 young adults to see if the ratio of index to ring finger length (2D:4D) — a marker of prenatal hormone exposure — differs between people with and without joint hypermobility (being double-jointed). Researchers measured finger lengths and joint flexibility using the Beighton score. The goal was to better understand whether hormones before birth influence joint looseness.
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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Locations
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Nigde Omer Halisdemir University
Niğde, Turkey (Türkiye)
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