Global baseline
Roughly one in a few dozen births globally may be twins, but this can vary by region and data source.
Facts Article
How common are twins worldwide?
Twin births are globally significant and rates have shifted over time. This guide gives context without hype: prevalence, variation and practical interpretation.
Why rates differ
Maternal age patterns, fertility treatments and demographics can affect twin prevalence.
How to interpret data
Population-level trends do not predict individual outcomes, but they help frame expectations and planning.
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