Salt: Nutrition, Pros & Cons
Salt (sodium chloride) is a essential mineral used globally for seasoning, preservation, and food processing. In India, commercial table salt is fortified with iodine to prevent thyroid disorders. While sodium is vital for physiological processes like fluid balance and nerve conduction, excessive consumption is a primary risk factor for elevated blood pressure and chronic diseases.
Health conditions
- Caution for Hypertension [ICMR-NIN, WHO]
- Caution for Heart Disease [ICMR-NIN, WHO]
- Caution for Kidney Disease [ICMR-NIN, PubMed]
- Good for Thyroid [ICMR-NIN, FSSAI]
- Caution for Gut Health [ICMR-NIN, WHO, PubMed]
- Caution for Weight Loss [ICMR-NIN, WHO]
Pros
- Fortified iodized salt is a highly effective vehicle for preventing iodine deficiency disorders, including goitre and developmental delays. [ICMR-NIN]
- Sodium is an essential electrolyte required for maintaining extracellular fluid volume, acid-base balance, and muscle function. [USDA]
Cons
- High intake of sodium is strongly associated with elevated blood pressure, significantly increasing the risk of stroke and cardiovascular events. [WHO]
- Excessive salt consumption can increase urinary calcium excretion, which may negatively impact bone health over time. [PubMed]
Key nutrients
- Sodium — An essential electrolyte that regulates body fluids, but should be limited to less than 2,000 mg (approx. 5 grams of salt) per day for adults.
- Iodine — A vital micronutrient added to commercial salt in India to support healthy thyroid function and cognitive development.