GERD is caused by a combination of factors, including a weak esophageal sphincter, increased gastric acid production, and a hiatal hernia.

Nausea is not a typical symptom of IBS. The most common symptoms are abdominal pain, diarrhea, and constipation.

Alcohol abuse is the leading cause of liver cirrhosis, followed by hepatitis B, hepatitis C, and non-alcoholic fatty liver disease.

Celiac disease is an autoimmune disorder that affects the small intestine, but it is not a type of IBD. Crohn's disease and ulcerative colitis are the two main types of IBD.

Adenocarcinoma is the most common type of pancreatic cancer, accounting for about 95% of all cases.

Physical activity is not a risk factor for colorectal cancer. Age, family history, and diet high in red meat and processed foods are all risk factors.

Hepatitis A is the most common type of hepatitis worldwide. It is spread through contact with contaminated food or water.

Vomiting is not a typical symptom of peptic ulcer disease. The most common symptoms are abdominal pain, heartburn, and nausea.

Gallstones are the most common cause of acute pancreatitis, accounting for about 70% of cases.

Diet modification is not a treatment for Crohn's disease. Anti-inflammatory medications, immunosuppressive medications, and surgery are all common treatments.

Hepatocellular carcinoma is the most common type of liver cancer, accounting for about 90% of all cases.

Skin rash is not a typical symptom of celiac disease. Diarrhea, weight loss, and iron deficiency anemia are all common symptoms.

Squamous cell carcinoma is the most common type of esophageal cancer, accounting for about 90% of all cases.

Surgery is not a typical treatment for GERD. Proton pump inhibitors, histamine-2 receptor antagonists, and antacids are all common treatments.

Adenocarcinoma is the most common type of pancreatic cancer, accounting for about 95% of all cases.