Omega-3 fatty acids (especially DHA) may protect against ulcerative colitis

Omega-3 fatty acids (for example, the EPA and the DHA in your fish oil supplements) have an anti-inflammatory effect, of interest to researchers in a recent study of inflammatory bowel disease, specifically ulcerative colitis. This large study, which focused on people from 45 to 74 years old, found that those with the highest consumption of DHA (410 mg to 2,000 mg per day) had a 77% reduction in the risk of developing ulcerative colitis over an average period of four years than those consuming the lowest amount (up to 110 mg per day). On the basis of their research, the study authors suggest that higher intake of omega-3 fatty acids, especially DHA, could have a protective effect against development of ulcerative colitis.

For more information on DHA, EPA and other fatty acid supplements, see the NYBC category:
Fatty acid supplements
Note that NYBC stocks a variety of these supplements, both from fish oil (Nordic Naturals and Jarrow), and from vegetarian (algae) sources.

Reference:
John, S et al. Dietary n-3 polyunsaturated fatty acids and the aetiology of ulcerative colitis: a UK prospective cohort study. Eur J Gastroenterol Hepatol. 2010 May; 22(5):602-6