What causes a Hiatal Hern...
Anything that puts intense pressure on your abdomen -- including persistent or severe coughing or vomiting, pregnancy, straining while going to the bathroom, or lifting heavy objects -- can contribute to hiatal hernias.(This is right off the Mayo Clinics website.) I have not had any experience with this. I believe the reason they are so worried about this is because the likelyhood of us throwing up. I hope this helps out some.