Diabetes is the most commonly known cause of gastroparesis. People with diabetes have high levels of blood glucose, which, over time, can damage the vagus nerve.

References

Parrish, Carol Rees, RD, MS, and Joyce Green Pastors, RD, MS, CDE. “Nutritional Management of Gastroparesis in People With Diabetes,” Diabetes Spectrum 2007 Oct; 20(4): 231-234. https://doi.org/10.2337/diaspect.20.4.231. https://spectrum.diabetesjournals.org/content/20/4/231 (accessed on 8/2/2020).

Vitale, Simone. “Sound Therapy and the Vagus Nerve,” The Sound Healer (September 24, 2019). https://thesoundhealer.org/sound-therapy-and-the-vagus-nerve/

Diabetic Gastroparesis Xplained
https://dgxplained.com/

Gastroparesis
https://www.medicinenet.com/gastroparesis/article.htm

Gastroparesis – Topic Overview
https://www.webmd.com/diabetes/tc/gastroparesis-topic-overview#1

Stimulating This ONE Nerve Relieves Fatigue, Anxiety And Brain Fog
https://www.powerofpositivity.com/vagus-nerve-fatigue-anxiety/

When Diabetes Causes Stomach Problems
https://www.webmd.com/diabetes/type-1-diabetes-guide/diabetes-and-gastroparesis#1