Group 1 - The core point of the article discusses the importance of salt in human health, emphasizing that sodium ions in salt play a crucial role in regulating bodily functions such as fluid balance, blood pressure, and energy metabolism [1][3] - The recommended daily intake of sodium is 1500 mg, and insufficient sodium can lead to health issues like hyponatremia, which can cause symptoms ranging from lethargy to severe complications like shock [3] Group 2 - Different types of salt available in the market include rock salt, lake salt, and sea salt, which are all essentially sodium chloride but differ in their sources and processing methods [5][9] - Rock salt is derived from ancient sea beds and is known for its high purity and low impurity levels, often sold at lower prices [6] - Lake salt is harvested from salt lakes and has larger granules that do not clump easily, while sea salt is produced through evaporation of seawater and may have lower sodium chloride purity [7][9] Group 3 - Specialty salts like bamboo salt and Himalayan pink salt are marketed as premium products, but they primarily serve the same purpose of sodium supplementation, with variations in flavor and appearance [10][11] - Nutritional salts, such as calcium and selenium salts, are available but provide minimal nutritional benefits compared to the recommended daily intake levels [12] Group 4 - When purchasing salt, consumers should focus on sodium and iodine content rather than price, with low-sodium salt being beneficial for individuals with hypertension [15] - Iodized salt is essential in iodine-deficient regions to prevent thyroid-related health issues, while some individuals may require non-iodized salt based on specific health conditions [17] Group 5 - The article stresses the importance of limiting salt intake to no more than 5 grams per day to avoid health risks associated with high salt consumption, such as hypertension and cognitive decline [18] - It also highlights the presence of hidden salts in various condiments and encourages a balanced diet with controlled salt intake [18]