Iodine overdose raises health alarm in Nepal

The Kathmandu Post raises a significant public health alarm in Nepal regarding iodine overdose and its severe consequences, as exemplified by a critical case of hyperthyroidism. The detailed account of the 26-year-old woman's deteriorating health due to excessively high T3 and T4 hormone levels, directly linked to high iodine intake, serves as a stark warning.

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The woman complained that she felt hungry all the time. Despite eating heavily, however, she had lost significant weight. Her eyes were bulging, red and constantly tearing up. She also had visible swelling in the neck and goitre.

The article highlights the strain on Nepal's healthcare system, with Bir Hospital seeing over 60 hyperthyroidism patients daily. Endocrinologists emphasize that while iodine is essential, excessive consumption can overstimulate the thyroid gland, leading to conditions like hyperthyroidism, particularly in individuals with pre-existing thyroid issues. The symptoms described—rapid heartbeat, severe weight loss despite increased appetite, trembling, and sleep difficulties—underscore the debilitating nature of the condition.

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In people who already have thyroid nodules or conditions like Graves’ disease or autoimmune disease, high iodine intake can make the overactive thyroid worse, and also causes increased production of T3 and T4 hormones.

Crucially, the report references the Nepal Micronutrient Status Survey-2016, which found a widespread issue of excessive iodine consumption, with 68% of the population exceeding recommended levels. This data, coupled with findings of both excessive and deficient iodine in salt samples, points to a systemic problem with iodine fortification and public awareness. From a Nepali perspective, this issue is particularly concerning as it affects a large segment of the population, potentially leading to widespread health complications and increased burden on healthcare resources. The article serves as a vital public service announcement, urging attention to dietary iodine levels and public health interventions.

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The study showed that over two-thirds—68 percent—of the population across the country is consuming iodine in excess of the recommended level—more than 40 ppm.