Published on 25 August 2026
Alcohol consumption, ranging from modest social drinking to regular excessive sessions, may trigger or exacerbate the digestive condition called diverticulitis.
What is diverticulitis?
Diverticulitis is a medical condition affecting the large intestine. This can develop small bulging pouches called diverticula and at this stage the condition is called diverticulosis. It is common, especially with age.
When these pouches become inflamed or infected, the condition is termed diverticulitis.
What is the link with alcohol?
It is considered that alcohol does not directly cause diverticulitis but that it has a role in triggering or worsening it.
Alcohol can:
- Irritate the lining of the gut
- Increase inflammation of the digestive tract
- Disrupt the balance of healthy gut bacteria
- Lead to, through dehydration, constipation which increases pressure on the large intestine
Are you at risk of developing diverticulitis?
You may be at risk of having diverticulitis if you:
- Eat a low-fibre diet
- Lack exercise
- Are obese
- Are elderly
- Smoke
- Take medications such as non-sterodial anti-inflammatory drugs (NSAIDs)
- Have certain genetic factors
How alcohol affects diverticulitis
Excessive alcohol consumption can adversely affect your short-term health, such as your ability to fight infections, and cause long-term issues including liver damage.
It may also prompt bowel irritation, pain aggravation and dehydration.
In acting as a bowel irritant, alcohol can increase inflammation and potentially trigger flare-ups or worsen existing symptoms.
To reduce pain aggravation, gastroenterologists often advise that reducing the intake of coffee, tea and alcohol can help lessen painful abdominal conditions.
Alcohol has a dehydrating effect which can make stools harder, putting pressure on the colon wall.
Symptoms of diverticulitis
Mild diverticulitis symptoms include:
- Mild cramps
- Bloating
- Constipation
More severe diverticulitis symptoms include:
- Abdominal pain, usually on the left side
- Constipation
- Cramping
- Fever
- Nausea
- Vomiting
- Chills
Chronic diverticulitis
Chronic diverticulitis may be diagnosed when there are repeated or prolonged attacks.
Sometimes prolonged diverticulitis can cause complications such as the development of intestinal strictures, fistulas, and diverticular sacs which bleed.
Chronic diverticulitis can cause small amounts of blood to be present in the stool. Bleeding may increase and noticed will be the passing of dark colour blood clots.
If you experience even a small amount of rectal bleeding it is essential you contact your healthcare provider without delay.
Diverticulitis and immediate care
Severe symptoms of diverticulitis may be linked to infection, bleeding and intestinal blockages. You may need urgent diagnostic testing, a stay in hospital and, perhaps, surgery.
If you have diverticulitis, should you avoid alcohol altogether?
Reducing alcohol consumption, or completely avoiding alcoholic drinks, may be advised.
Alternatives to alcoholic drinks
If you are reducing or cutting out your alcoholic intake you may want to consider some of the following alternatives:
- Alcohol free beer or wine, if tolerated
- Sparkling water with fruit
- Mocktails made with soda water and fruit juice
- Still water, either on its own or with a slice of lemon, lime or cucumber
- Herbal teas
- Diluted fruit juice
- Low sugar electrolyte drinks
Expert support for diverticulitis from Benenden Hospital
If your quality of life is being affected by symptoms of diverticulitis, our gastroenterology service provides discreet diagnosis and treatment alongside our comprehensive range of tests and scans, including a liver scanning ultrasound.
Book an appointment with one of our expert Consultant Gastroenterologists using our online booking tool or by calling 01580 363501 - or request a callback by completing our online enquiry form.