Sodium
Body function
Fluid balance; nerve transmission; muscle function; blood pressure regulation
Daily requirement
No more than ~2,300 mg/day (about 6 g of salt); many people exceed this
Deficiency signs
Uncommon; with heavy sweating, vomiting, or diarrhoea can cause headache, confusion, and cramps
Excess risks
High intake is linked to raised blood pressure and cardiovascular risk
At-risk groups
People with high blood pressure, heart or kidney disease; endurance athletes may need more
Supplement forms
Rarely supplemented; electrolyte products for heavy sweating or illness
Related symptoms
Educational information only — not medical advice. This content does not diagnose, treat, or replace consultation with a qualified healthcare professional. Always seek professional medical advice for symptoms, supplement use, or health concerns.