Dry fasting, 8 glasses of water per day and all the other popular fads to lose weight, heal conditions, clear your skin and keep you healthy, they all have their moments. Still, some of them are not scientifically-proven or, even worse, can be harmful and compromise your health. Kidneys are one of the organs most affected by lack of fluid intake. On World Kidney Day and with Hydration & Nutrition Week coming up next week, Dr Richard Hull, Consultant Nephrologist at New Victoria Hospital, provides some key information on kidney health.