Why does cabbage make us tired?

Cabbage contains compounds that can lead to feelings of fatigue in some individuals, primarily due to its high fiber content, which may slow digestion and divert energy to the digestive process. Additionally, certain types of cabbage, like Brussels sprouts and other cruciferous vegetables, contain small amounts of a compound called goitrin, which can affect thyroid function if consumed in large quantities. However, for most people, cabbage is a nutritious food that should not cause significant tiredness. Individual reactions may vary based on personal health and dietary habits.