The document summarizes two case studies:
1. A 44-year-old woman presented with flu-like symptoms and was found to have elevated liver enzymes. Her AST, ALT, and bilirubin levels indicated acute hepatic necrosis, representing the initial stage of a viral liver infection.
2. A 47-year-old man who was overweight and ate fast food regularly had fatigue and chest discomfort. His cholesterol, VLDL, and triglyceride levels were elevated, indicating the initial stages of atherosclerosis and increased risk of heart disease. Changes in diet and exercise were recommended to reduce lipid levels.