His volunteer work in the hospital 'led' him 'to' a career in nursing. = His volunteer work in the hospital 'led' [='inspired'] him 'to become' a nurse.
We've been 'led to believe' that the labels on food items disclose all ingredients, but it's becoming clear that this is not the case.
His volunteer work in the hospital 'led to' a career in nursing. = His volunteer work in the hospital 'led to' him becoming a nurse.
(..) and there's no food on these nursery slopes. The sea ice still holds firm, but it won't last much longer. Day , and the mother has led her cubs a mile from the den. It's time to put them to the test. They've grown enormously in confidence, but they don't have their mother's sense of urgency. (..)2006 TvShow: Planet Earth Title: From Pole to Pole Season: 1 Episode 1