That line is another clickbait-style health claim. There is no group of people for whom cabbage is universally “absolutely forbidden.” But there are a few specific situations where people may need to limit or avoid it.
When cabbage may cause problems
1) People with thyroid issues (in large amounts, raw)
Cabbage is a cruciferous vegetable and contains compounds called goitrogens.
- In very large amounts (especially raw), they may interfere slightly with iodine use in the thyroid
- This matters mainly if someone already has iodine deficiency or untreated hypothyroidism
👉 Important: normal servings, especially cooked cabbage, are generally safe.
2) People with IBS or sensitive digestion
Cabbage is high in fiber and fermentable carbs (FODMAPs):
- Can cause bloating, gas, discomfort
- Especially raw cabbage or large portions
3) People recovering from certain gut conditions or surgery
Doctors may temporarily limit high-fiber foods like cabbage during:
- Post-surgery recovery
- Severe gut inflammation flare-ups
4) People on blood-thinning medication (vitamin K awareness)
Cabbage contains vitamin K:
- It does not need to be avoided
- But intake should be consistent if someone is on warfarin-type medication
Who should NOT worry at all
Most people can safely eat cabbage, including:
- Healthy adults
- People with normal thyroid function
- People trying to lose weight or improve digestion (in moderate amounts)
In fact, cabbage is:
- Low-calorie
- High in fiber
- Rich in vitamin C and antioxidants
Bottom line
Cabbage is not dangerous food. Only certain people may need portion control or preparation changes (like cooking instead of raw)—not complete avoidance.
If you want, I can explain why cabbage gets so many exaggerated “avoid or cure everything” health claims online—it’s actually a common pattern with cruciferous vegetables.
