Vitamins that may be helpful
UC is linked to an increased risk of colon cancer. Studies have found that people with UC who take folic acid supplements or who have high blood levels of folic acid have a reduced risk of colon cancer compared with people who have UC and do not take folic acid supplements.17 18 19 Although these associations do not prove that folic acid was responsible for the reduction in risk, this vitamin has been shown to prevent experimentally induced colon cancer in animals.20 Moreover, low blood folic acid levels have been found in more than half of all people with UC.21 People with UC who are taking the drug sulfasalazine, which inhibits the absorption of folic acid,22 are at a particularly high risk of developing folic acid deficiency. Folic acid supplementation may therefore be important for many people with UC. Since taking folic acid may mask a vitamin B12 deficiency, however, people with UC who wish to take folic acid over the long term should have their vitamin B12 status assessed by a physician.
Alcohol consumption is known to promote folic acid deficiency and has also been linked to an increased risk of colon cancer.23 People with UC should, therefore, keep alcohol intake to a minimum.
Preliminary24 and double-blind trials25 26 27 have found that fish oil supplementation reduces inflammation, decreases the need for anti-inflammatory drugs, and promotes normal weight gain in people with UC. However, fish oil has not always been effective in clinical trials for UC.28 Amounts used in successful clinical trials provided 3.2 grams of EPA and 2.2 grams of DHA per day—the two important fatty acids found in fish oil.
A fatty acid called butyrate, which is synthesized by intestinal bacteria, serves as fuel for the cells that line the small intestine. Administration of butyrate by enema has produced marked improvement in people with UC in most,29 30 31 32 33 34 but not all,35 preliminary trials. Butyrate taken by mouth is not likely to be beneficial, as sufficient quantities do not reach the colon by this route. Although butyrate enemas are not widely available, they can be obtained by prescription through a compounding pharmacy, which prepares customized prescription medications to meet individual patient needs.
In a preliminary trial, 6 of 13 people with ulcerative colitis went into remission after taking 200 mg per day of DHEA for eight weeks.36 This large amount of DHEA has the potential to cause adverse side effects and should only be used under the supervision of a doctor.
In preliminary37 and double-blind38 trials, a probiotic supplement (in this case, a non-disease-causing strain of Escherichia coli) was effective at maintaining remission in people with UC. In a double-blind trial, a combination probiotic supplement containing Lactobacilli, Bifidobacteria, and a beneficial strain of Streptococcus has been shown to prevent pouchitis, a common complication of surgery for UC.39 People with chronic relapsing pouchitis received either 3 grams per day of the supplement or placebo for nine months. Eighty-five percent of those who took the supplement had no further episodes of pouchitis during the nine-month trial, whereas 100% of those receiving placebo had relapses within four months. Preliminary evidence suggests that combination probiotic supplements may be effective at preventing UC relapses as well.40
In a preliminary trial, people with UC significantly improved on a sugar-free, low-allergen diet with additional nutritional supplementation that included a multivitamin-mineral supplement (2–6 tablets per day); a fish oil supplement (400 mg per day); borage oil (400 mg per day); flaxseed oil (400 mg per day); and a probiotic formula containing Lactobacillus acidophilus and other species of beneficial bacteria.41 Some participants received slight variations of this regimen. Since so many different supplements were given and since the trial was not controlled, it is not possible to say which, if any, of the nutrients was responsible for the improvement observed by the researchers.
Are there any side effects or interactions?
Refer to the individual supplement for information about any side effects or interactions.
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