Look after your kidneys By Dr Harold Gunatillake FRCS, FICS, FIACS, AM (Sing), MB BS – Health writer The two kidneys you have are so valuable for your health and survival. You tend to think of safeguarding your heart by reducing the risk factors that can give you heart disease, such as control of cholesterol numbers in your blood among other precautions. Do you ever  think of the risk factors that harm your kidneys? ...