4 Types of People Who Should Avoid Eating Cabbage

Cabbage is widely regarded as a superfood—low in calories, packed with fiber, and full of essential nutrients like vitamin K, vitamin C, and antioxidants. It supports digestion, heart health, and even weight loss. However, while it’s beneficial for most, cabbage isn’t suitable for everyone.

Here are four types of people who should consider avoiding or limiting cabbage in their diet:

1. People with Hypothyroidism

Cabbage contains goitrogens—natural compounds that can interfere with thyroid function by affecting iodine uptake. For people with hypothyroidism or iodine deficiency, consuming large amounts of raw cabbage (and other cruciferous vegetables like broccoli and kale) can potentially worsen thyroid issues.

Tip: If you have thyroid concerns, talk to your doctor before adding large amounts of cabbage to your diet. Cooking cabbage can reduce its goitrogenic effect.

2. Individuals with Irritable Bowel Syndrome (IBS) or Digestive Sensitivities

Cabbage is high in FODMAPs—fermentable carbs that can cause bloating, gas, and digestive discomfort in people with IBS or sensitive stomachs. The fiber and sulfur in cabbage are healthy for most people, but for some, especially in raw form, it can trigger discomfort.

Tip: If you experience bloating or gas after eating cabbage, especially raw, try cooked cabbage in smaller portions or avoid it altogether.

3. People Taking Blood Thinners (e.g., Warfarin)

Cabbage is rich in vitamin K, which plays a key role in blood clotting. While that’s good for most people, those on anticoagulant medications (like warfarin) need to keep their vitamin K intake consistent. A sudden increase in cabbage consumption could interfere with medication effectiveness.

Tip: Consult your healthcare provider before adding more cabbage to your diet if you’re on blood thinners.

4. Individuals with Kidney Stones (Especially Calcium Oxalate Stones)

Certain types of cabbage (especially red cabbage) contain oxalates, compounds that can contribute to the formation of kidney stones in susceptible individuals. If you’re prone to calcium oxalate kidney stones, it’s wise to moderate your intake of oxalate-rich foods.

Tip: Stay hydrated and work with a dietitian to manage oxalate levels in your diet if you have a history of kidney stones.

Final Thoughts

Cabbage is a nutrient-dense vegetable with many health benefits, but it’s not for everyone. If you fall into any of the categories above, speak with a healthcare professional before including large amounts of cabbage in your meals.

As with most foods, balance and moderation are key.