Your large bowel, or colon, is at the end of the Gastrointestinal tract. It starts on the right side of your abdomen, where the small intestine empties into the caecum. This is also where the Appendix bulges down, looking like a little finger coming from the caecum. The 5 foot long large intestine is the final processing area of your food, after the nutrients have been absorbed.

The Colon contains virtually all of the microbiome, reduces the volume of the fecal matter, and propels it to its final destination. The propelling muscles are an inner circular ring, and 3 outer longitudinal strips. These outer strips of muscle do not completely encircle the Colon, allowing for protuberances of lining membrane and circular muscle to balloon out into prominences called Taenia.
It is in these weakened areas, especially where blood vessels penetrate that little herniations form over the years. Diverticulosis occurs in 50% of people more than 60 years of age, and in almost everybody more than 80 years.
Diverticulosis is a condition where pressures up to 120 mm or mercury, generated by the colonic muscles gradually push out little pouches of lining membrane called diverticula. Nobody knows why some people get an INFLAMMED diverticulum.
Age, of course, is a factor, as are Obesity, diabetes, smoking and poor diet; a tendency toward inflammation is common in all of these risk factors. Comparing diverticulitis with Appendicitis is an interesting exercise. The symptoms are mirror images of each other. Appendicitis occurs on the right side.
Diverticulitis usually occurs on the left side, except in asian people. The asian DIET seems to favor diverticula on the right side. When asians immigrate to the U.S. and start eating more Red meat and fewer vegetables, the diverticula shift to the left side.

Signs of Diverticulitis include gastrointestinal symptoms, such as pain, tenderness,nausea, cramps, constipation, and Fever. Rectal bleeding can sometimes occur. Treatment includes antibiotics.
If the condition worsens, serious complications, such as abcess may develop and require surgery. As usual, Prevention, including diet and exercise, is better than Treatment. A HIGH FIBER DIET is the best prevention.
–Dr. C.
Article #1 to read – Diverticular disease of the colon: New perspectives in symptom development and treatment
Article #2 to read – Management of Colonic Diverticulitis | Effective Health Care Program