Before treating anything you need a good diagnosis because bowels are a nightmare to treat and the wrong treatment nearly always makes things worse. I have only presented a hypothesis and now it needs to be proved or eliminated.
It is thought that diverticulum are a results of dysfunctional bowel movement also known as intestinal dyskinesia or intestinal dysmotility. The reason it has so many names is because bowels are not in my opinion a highly developed are of science. Bowel problems are always dismissed as IBS or self inflicted lifestyle conditions. Treatment options take so long before any benefit is evident. I have personal experience having pseudo-obstruction.
Nevertheless, Some of the causes are: tress and anxiety, improper personal diet, poor coordination of the nervous system that controls the gut, hereditary (bad genes), problems with female reproductive organ, hormonal or endocrine.
The next questions is, do you get pain? You appear to be in good health and in good spirits so I would suggest making only small changes at a time.
Abdominal pain can be piercing, nagging, acute, stabbing or dull and last for several hours. The pain changes after passing wind or defecating. It is accompanied by constipation, abdominal distension and growling. Depressiveness, severe anxiety and nervousness are inherent to the ill person.
Self treatment is to adopt a relaxed lifestyle devoid of junk food, regular caffeine and alcohol. Rich in probiotic foods and calming teas. Regular rhythmic activity. Good sleep health, etc. You know the liturgy.