I have UC and am on Mesalamine. How to improve my fertility?

Question

Hello doctor,

I am a 29-year-old female, recently diagnosed with mild UC, experiencing six to eight bloody stools daily and mild lower abdominal pain. I underwent a Colonoscopy that confirmed left-sided inflammation; CRP 12 mg/L, fecal calprotectin 380 µg/g. I am on Mesalamine 2.4 g daily.

My periods have been irregular since diagnosis. My questions are:

Could inflammation or medicines be affecting my menstrual cycle?
Should the treatment strategy change due to possible fertility concerns?
How often should a colonoscopy or laboratory tests be repeated to check healing?
Are probiotics or diet modifications proven to reduce flares safely while trying to conceive?

Kindly suggest.

Answer 1

Hello,

Welcome to icliniq.com.

I understand your concern.

In women with ulcerative colitis (UC), both the disease activity and sometimes the medications can influence the menstrual cycle. Active inflammation, nutritional deficiencies, stress, and systemic inflammation can all disrupt hormonal balance and contribute to irregular periods. Mesalamine itself is not usually associated with menstrual changes, but poorly controlled UC may affect cycles indirectly.

Fertility in women with mild to moderate UC is generally preserved, especially if surgery has not been performed, and most women can conceive safely once the disease is in remission. For this reason, the main treatment goal before pregnancy is to achieve and maintain remission, since active disease at conception increases risks for complications.

Mesalamine is considered safe during conception and pregnancy, so treatment usually does not need to be stopped; in fact, staying on therapy is protective for both you and the baby. Monitoring usually includes repeating fecal calprotectin and CRP (C-reactive protein) every few months to track inflammation, especially if symptoms persist. Colonoscopy is not repeated routinely unless symptoms worsen or remission needs to be confirmed before major treatment decisions.

In practice, many gastroenterologists check mucosal healing with colonoscopy every one to two years in UC, or sooner if there is a flare, but rely on stool and blood markers more frequently. As for supportive measures, probiotics (such as VSL 3 (live freeze-dried Lactic Acid bacteria and Bifidobacteria) or similar formulations) have some evidence for reducing relapse risk in UC, though their effect is modest and they should not replace medication.

Diet can help manage symptoms and reduce flares. Common strategies include

A balanced Mediterranean-style diet.
Limiting processed foods.
Avoiding excessive dairy or high-fat foods if they worsen symptoms, and
Ensuring adequate iron, vitamin D, and folate intake.

During pregnancy planning, a dietitian familiar with IBD (inflammatory bowel disease) can help maintain good nutrition without unnecessary restrictions.

I hope this helps. Always feel free to reach out at any time.

Thank you.