Please explain who is susceptible to diverticulosis?

Advanced age: And low residue diet. Diverticulosis coli is an acquired degenerative disease, in contrast to congenital diverticular disease, such as meckel's diverticulum.

Low fiber: low fiber diet, obese people, smoking, chronic constipation

Diverticulosis.: Diverticuli usually pop in response to straining with bowel movements in the chronic sense, which is a consequence of a low fiber diet. Granted, there may be some genetic tendencies like most other things, but a low fiber diet has been linked to diverticuli generation.