How sodium maintains water-electrolyte balance, why blood pressure changes with salt intake, and what the DASH-Sodium and SSaSS studies revealed. Detailed information on RAAS, salt sensitivity, WHO guidelines, food labels, potassium-enriched salt substitutes, and situations requiring individual medical decisions.

September 2, 2026

Knowledge · Nutrition

Magnesium in the Body: Why It Matters, How to Recognize Deficiency, and How to Choose a Supplement Safely

A practical guide to magnesium: its roles in muscles and nerves, food sources, deficiency risks, testing and limits of self-directed supplements.

September 1, 2026

Knowledge · Nutrition

Iron and ferritin: deficiency, testing, food and safety

A practical guide to iron balance: the roles of haemoglobin and ferritin, causes of deficiency or overload, useful tests, diet and safe correction.

September 1, 2026

FAQ · Nutrition

Nutrition and training: frequently asked questions

How to start the food diary, which reports are available, how to edit recipes and speed up daily logging, plus the common question about gross versus net calories across screens.