What should you know about vaping and ulcerative colitis?

Ulcerative colitis is an inflammatory condition affecting the lining of the large bowel. Symptoms can include diarrhoea, urgency, blood or mucus in stool, abdominal pain and tiredness. Vaping exposes the lungs and body to nicotine and other chemicals; its effects do not replace prescribed anti-inflammatory or immune-targeted treatment.

A change in bowel habit may reflect a flare, infection, medicine effect or another problem. Do not assume vaping caused every symptom, and do not use nicotine to control colitis. Keeping a record of stool changes, pain, bleeding, temperature, medicines and vaping can help a clinician identify the pattern.

Continue your prescribed colitis plan unless your clinician tells you otherwise. Contact your IBD or GP team when symptoms change, especially if diarrhoea or abdominal pain is becoming more frequent. If you vape, mention the device, nicotine strength and pattern of use; this helps with a realistic reduction or quit plan.

Drink fluids regularly and follow your clinician's advice during a flare. Avoid taking anti-diarrhoeal medicines or anti-inflammatory painkillers without checking first, because they may be unsuitable in some situations. Screening and follow-up plans are separate from vaping decisions.

Seek urgent medical care for severe or worsening abdominal pain, repeated vomiting, heavy rectal bleeding, a swollen abdomen, faintness, confusion, or inability to keep fluids down. A flare with frequent diarrhoea, fever or marked weakness also needs prompt assessment. A GP consultation can help when symptoms are persistent but not immediately severe.

Ask: Could these bowel changes be a flare or infection? Does vaping affect my medicines or symptoms? How can I reduce nicotine safely? Which warning signs should send me to urgent care? When should my next review or colorectal cancer screening discussion happen?