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The Long Road to a Cure: How were rickets discovered?

In the late 19th century, autopsy studies in industrialized European cities revealed that as many as 80-90% of children showed evidence of rickets. This startling prevalence drove a century-long medical quest to understand **how were rickets discovered**, a story involving ancient observations, the Industrial Revolution, and the eventual pinpointing of a vital nutrient. It is a story of medical evolution, persistence, and ingenuity that fundamentally changed pediatric health.