Hu, also known as broad bean, is a delicious food with high nutritional value. Vicia faba seeds contain nestin glycoside, which can cause acute hemolytic anemia (Vicia faba yellow disease) after human consumption. Eating green broad beans in spring and summer, if cooked improperly, will often cause poisoning. And it usually happens 4 to 24 hours after eating raw broad beans. In order to prevent broad bean poisoning, it is best not to eat fresh and tender broad beans, and be sure to cook them before eating.

Silkworm bean disease is a disease caused by glucose -6- phosphate dehydrogenase (G-6-PD) deficiency, which is characterized by sudden acute intravascular hemolysis after eating fresh broad beans under the condition of hereditary glucose -6- phosphate dehydrogenase (G-6-PD) deficiency.