by
Almog Ramrajkar
| Apr 23, 2025
Updated on - 06 Feb 2026
Red cabbage is a nutrient and mineral-rich vegetable packed with vitamins, antioxidants and fibre. Many of us love it for the unique flavour, nutritious properties and vibrant colour. With highly nutritious properties, it improves digestion, boosts immunity and relieves inflammation, improving overall well-being. However, just like any other food, red cabbage may also have side effects. Despite its multiple health benefits, red cabbage may not be appropriate for everyone, especially for individuals with specific health conditions.
This article highlights the side effects of red cabbage, when to avoid it and whether health insurance can cover its potential risks. Let’s start!
What is a red cabbage?
Related to kale and broccoli, red cabbage is a leafy vegetable in the Brassica genus that is rich in nutrients and valued for its dark purple-red colour and many uses. Anthocyanin chemicals give it a unique shade and offer essential antioxidant health advantages. It is a versatile vegetable and can be added to salads, stews and a variety of other recipes. It is low in calories and high in minerals (potassium, magnesium and calcium), vitamins (A and B6) and fibre.
Red cabbage side effects
While red cabbage is generally safe, overconsumption or individual sensitivities may cause adverse reactions. Red cabbage side effects include:
Digestive issues
Red cabbage is high in fibre, which can sometimes cause digestive discomfort. Consuming large amounts may cause bloating, gas or stomach cramps, especially for individuals with irritable bowel syndrome (IBS).
Thyroid interference
Cruciferous vegetables, including red cabbage, contain goitrogens, compounds that can interfere with thyroid function by inhibiting iodine absorption. Individuals with hypothyroidism should moderate their intake of raw red cabbage to avoid worsening their condition.
Blood sugar fluctuations
Red cabbage is known to have blood sugar-regulating properties. While this is beneficial for diabetics, it may cause complications for individuals taking blood sugar-lowering medications. Consuming large quantities without medical guidance could lead to hypoglycemia (low blood sugar).
Allergic reactions
Although rare, some individuals may be allergic to red cabbage. Symptoms of an allergic reaction may include itching, swelling, skin rashes or difficulty breathing. If you notice any of these symptoms after consuming red cabbage, seek medical attention immediately.
Drug interactions
Red cabbage contains vitamin K, which is crucial for blood clotting. This can interfere with blood-thinning medications such as warfarin, reducing their effectiveness. If you are on anticoagulant medication, consult your doctor before increasing your intake of red cabbage.
When to avoid eating cabbage?
Although red cabbage is rich in nutrients, you should limit or avoid its consumption:
- If you have thyroid disorders.
- If you are taking blood thinners like warfarin.
- If you are prone to digestive discomfort.
- If you have food allergies.
- If you are a diabetic on medication.
Does health insurance cover potential risks caused due to red cabbage?
A medical insurance policy usually does not cover side effects that can be managed without hospitalisation, such as temporary digestive discomfort. However, if red cabbage leads to allergic reactions, thyroid interference, blood sugar fluctuations or drug interactions that require emergency medical attention or inpatient care, the related expenses may be covered, depending on the terms of your policy.
For older adults who may have existing conditions like thyroid disorders or diabetes, senior citizen health insurance can be especially helpful. It offers coverage for hospitalisation, emergency treatments and age-related health risks, ensuring that medical needs are met without financial strain.
Conclusion
Despite all the advantages that red cabbage offers, remember that moderation is the key. Whether you eat it raw in a salad or cook it well to prepare any dish, eating it in moderate amounts helps you avoid the side effects. Also, if you have issues like thyroid or have to consume blood thinners, red cabbage side effects can cause severe issues. In such cases, consider consulting with your healthcare provider for better knowledge.
It is best to eat red cabbage in moderation and seek medical advice if you have thyroid, diabetes or medication-related concerns before including it in your meals. While you take care of your health and do the best to avoid the side effects, let us help you safeguard your well-being. Fill out the form given in this blog and we’ll get back to you with personalised insurance advice, all based on your specific requirements.
FAQs
1. What are the signs of red cabbage intolerance?
The symptoms of cabbage intolerance can vary from mild to severe. Common cutaneous symptoms include urticaria (hives), angioedema (swelling) and flare-ups of atopic dermatitis. Respiratory symptoms may involve rhinitis (nasal congestion), wheezing and in severe cases, anaphylaxis.
2. Why does red cabbage cause gas/bloating?
Red cabbage is known to be a cruciferous vegetable, high in complex sugar raffinose and fibre. Because the human body doesn’t have enough enzymes to fully break down raffinose, it ferments in the intestine, causing gas/bloating.
3. How long does red cabbage stay in the stomach?
When cooked properly, red cabbage takes 40-50 minutes to pass through the stomach. Whereas, if eaten raw, it can take 1-1.5 hours to get digested. Also, the exact digesting time can vary because of factors like cooking, fibre content and the individual’s gut sensitivity.
4. How to understand if cabbage is turning bad?
When a cabbage ages and is not in the best eating condition, you’ll notice its outer layers becoming more withered. This is common, so by removing these layers, you can consume the cabbage. However, if you store it in the refrigerator, consider not doing it for a longer period. Doing so causes it to have grey or black spots. If you find similar spots, it's better to discard them.
Disclaimer: The information provided in this blog is for educational and informational purposes only. It is not intended as a substitute for professional advice, diagnosis or treatment. Please consult a certified medical and/or nutrition professional for any questions. Relying on any information provided in this blog is solely at your own risk and ICICI Lombard is not responsible for any effects or consequences resulting from the use of the information shared.