Opposing or effective against rickets, a disease caused by vitamin D or calcium deficiency that affects bone development.
From anti- (against) + rickets (possibly from Greek 'rhachis' meaning spine). Medical term from 19th-20th centuries when rickets was a major public health problem.
The discovery that vitamin D prevents rickets was revolutionary—suddenly poor children's bone deformities weren't inevitable, just a fixable nutritional problem, changing how we think about poverty and health!
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