Supporting a healthy colon
Anthocyanins are a class of antioxidant compounds found in purple, blue, and red fruits and vegetables like berries, Concord grapes, red onion, cherries, and red cabbage. Bilberries are a particularly rich source of anthocyanins, and studies suggest that they may improve vision and treat circulatory disorders through their free radical-scavenging actions. Bilberry has also been used in Europe for centuries to help treat diarrhea.
To study its effects on ulcerative colitis, a team of researchers from Germany and Switzerland tested a standardized extract of bilberry in 13 people diagnosed with a mild to moderate condition. Participants took 160 grams per day of the supplement containing dried bilberries and bilberry juice, providing about 840 mg of anthocyanins, for six weeks.
Before and after the study, the participants underwent a procedure to visualize the last part of the colon (sigmoidoscopy). Other tests measured disease activity and intestinal inflammation, and the people kept a diary of their symptoms throughout the study.
Here's what the study found:
By the end of the treatment period, disease was in complete remission for 63% of the people and, in total, 91% were either in remission or their symptoms had improved significantly.
Measures of intestinal inflammation decreased significantly over the course of the treatment.
Microscopic examination of intestinal biopsies confirmed the benefit of the treatment.
Disease activity and intestinal inflammation increased after bilberry was discontinued.
"Bilberry intake is neither associated with any observed moderate-to-severe side effects nor potential theoretical concerns with regard to long-term intake. Hence, our findings implicate a highly favorable risk-benefit ratio," commented lead study author, Dr. Luc Biedermann of the University Hospital Zurich.
Be colitis smart
While the results of the new study are encouraging, more research is needed before firm recommendations about bilberry can be made. In the meantime, try adding some of these tried and true remedies to your medicine cabinet:
- Fish oil. Omega-3 fatty acids found in cold water fish such as salmon may help decrease inflammation and prevent relapses in people with ulcerative colitis.
- Probiotics. Good health starts in the gut and studies have found that balancing the bacteria in the intestines could benefit people with inflammatory bowel disease by inducing remission and preventing local infection in the intestines.
- Boswellia. Otherwise known as frankincense, this time-honored remedy may reduce ulcerative colitis symptoms and induce remission.
(J Crohns Colitis 2013;7:271-9)