Patients with a genetic disorder of the kidney called autosomal dominant polycystic disease (ADPKD) should also drink plenty of water as adequate water intake suppresses a hormone called ADH ...

ADH is produced by the part of the brain that monitors water levels in the blood. It is then carried in the blood to its target organ – the kidneys. When the brain detects lower than normal ...

These diagrams show what happens when there is either too little or too much water in the blood.