Studying towards a Ph.D. in Public Health online requires a lot of hard work and dedication. When you study towards on online public health Ph.D., you will be required to be incredibly disciplined since you are working towards a deadline with slim to none supervision. Public health Ph.D. programs online are very well supported and you should use the tools that will be provided to you by your tutor. A Ph.D. in public health online is a fantastic opportunity to work and study at the same time.