That's a misconception. It depends on where you live, but most people who work inside can expect to be deficient. For instance, in a study on skateboarders in

That's a misconception. It depends on where you live, but most people who work inside can expect to be deficient. For instance, in a study on skateboarders in Hawaii who spent around 4 hours in the sun each day, 50% of participants were found deficient. https://pubmed.ncbi.nlm.nih.gov/17426097/ https://pubmed.ncbi.nlm.nih.gov/17426097/