Sleeping on the stomach may cause spinal alignment and neck pain issues if a person does not have proper spinal alignment and neck support. However, it is important that individuals choose the position that allows them to get adequate sleep each night. If a person prefers stomach sleeping, they do not need to change their sleep position if it affects sleep quality or overall well-being. If people experience sleeping issues, neck or back pain, or other issues related to their sleeping position, they can consult with a doctor.