19:42 UTC+8, 2023-05-17        Shanghai residents are apparently low on iodine, a necessary nutrient for metabolism and growth, authorities said. So iodine supplements in salt are important for a balanced diet.   19:42 UTC+8, 2023-05-17        Shanghai is an iodine deficient region, so a proper iodine supplement through salt is necessary and important, said the Shanghai Health Commission during this week's al Nutrition Week. Studies found iodine-added salt is a major source of iodine for local residents, while iodine from aquatic food is low in diets.

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