Anemia, leukemia, hemophilia,arteriosclerosis,and heart attack. The cause of anemia is lack of iron. Leukemia is caused by the disease of white blood cells that starts at the bone marrow.The cause of hemophilia is just that the blood clots very slowly. Arteriosclerosis is caused by eating to much fatty foods.Heart attack is caused by being clotted by blood that's why the blood can't pass.To prevent arteriosclerosis moderate exercise and doctors advice.To prevent anemia, you take rich foods' such as malunggay, liver,ampalaya,whole grains and milk. To prevent heart attack avoid excessive physical activity, keeping weight to normal and by avoiding worry and tension.