Even healthy foods like cabbage can be harmful when eaten with these 4 foods.

Cabbage is also a vegetable rich in vitamins and nutrients, so it is quite effective in conditions of arthritis, nervous breakdown, inflammation, indigestion, vision problems and obesity.
Cabbage is rich in iron so it is very useful in treating anemia for people who are anemic due to iron deficiency.

But eating cabbage with the following foods is harmful:
Foods rich in tannins
Foods rich in tannins such as green tea, persimmons, grapes, etc., when eaten together or close to cabbage, can affect the body's ability to absorb iron. This is especially dangerous for people with iron deficiency anemia.
Additionally, the tannins in green tea and fruit when combined with the protein in cabbage can form compounds that are difficult to digest, leading to bloating, abdominal pain, constipation or diarrhea.
If you regularly combine these two foods, your digestive system can be seriously affected. It is even more dangerous if you eat cabbage with them when you are hungry.
Milk and dairy products
Milk and dairy products such as yogurt, cheese, and butter are rich in protein and lactose, while cabbage is rich in fiber and some sulfur compounds. When these two foods are combined, the digestive system may have difficulty absorbing them, causing bloating, flatulence, indigestion, and even diarrhea in people with lactose intolerance.
In particular, for people with sensitive digestive systems or stomach problems, eating cabbage with milk can increase the risk of ulcers and digestive disorders.
Animal liver
Animal liver is rich in iron and copper, while cabbage contains high levels of vitamin C. When eaten together, the iron and copper in the liver will oxidize vitamin C, making it impossible for the body to absorb this important nutrient.
Not only that, the liver is the detoxification organ of animals, and can contain a certain amount of heavy metals or toxins. When combined with cabbage - a vegetable that can increase the absorption of certain minerals - this can cause the body to absorb more toxins, which can adversely affect the liver and kidneys.
Shellfish
Shellfish such as shrimp, crab, clams, and snails are rich in calcium and copper. When combined with cabbage, the vitamin C in the vegetable can react with the copper in the seafood, reducing the nutritional value of both foods.
Some studies have also shown that eating seafood with foods rich in vitamin C can increase the risk of heavy metal accumulation in the body, causing damage to the liver and nervous system. In addition, this combination can also stimulate allergic reactions in some people, causing hives, itching, or even difficulty breathing.