I have food are candy coming out my nose more often now. what may be cause of the food coming out nose while eat ,walking etc?..

Exam: This represents a serious medical problems causing regurgitation of stomach contents through that nasal passages. You neede an examination.

Seek help: This could represent issues with food refluxing back up from the stomach or food diverting into the back of the nasopharynx during the swallowing process, instead of heading down the food pipe into the stomach(so called velopharyngeal insufficiency). The input of your doctor will really help determine the best course of treatment.