Undercooked shiitake mushrooms may cause food poisoning and it is recommended to cook them thoroughly before consumption. Shiitake mushrooms are commonly used edible mushrooms. If they are not properly handled and consumed in large quantities, they may cause poisoning symptoms such as nausea, vomiting, abdominal pain and diarrhea. This is due to the fact that shiitake mushrooms are grown in a moist environment with a lot of contaminated bacteria on the surface, which can easily lead to bacterial and fungal food poisoning if not heated sufficiently. Shiitake mushrooms are rich in nutritional value, each 100 grams of fragrant fresh shiitake mushrooms contain 26 calories, of which 2.2 grams of protein, 5.2 grams of carbohydrates, 0.3 grams of fat, 2 milligrams of calcium, 0.3 milligrams of iron. Proper consumption can provide the body with the above nutritional value, which is beneficial to human health. Shiitake mushrooms should be eaten by choosing fresh, cooked mushrooms, and mushrooms that have undergone mold should not be ingested to avoid affecting your health. Raw shiitake mushrooms should be cleaned and should not be consumed by those who are allergic to shiitake mushrooms.