Rickets is mostly seen as a 19th-century disease, but research has revealed that the Romans also had a big problem with getting enough vitamin D. Researchers from Historic England and McMaster University in Canada examined 2,787 skeletons from 18 cemeteries across the Roman empire and discovered that rickets was a widespread phenomenon 2,000 years ago. Rickets is caused by vitamin D deficiency, often because of a lack of exposure to sunshine... During the three-year project, researchers examined skeletons from northern England to southern Spain, looking for the deformities generally seen in rickets. Evidence for rickets was found in more than...