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Plant foods rarely contain vitamin B12, so supplementing is essential for vegans. Other nutrients in short supply include vitamin D, iodine, iron, zinc, calcium and omega-3 fats. Before diving ...
Iodine deficiency is a lack of the trace element iodine, an essential nutrient in the diet.It may result in metabolic problems such as goiter, sometimes as an endemic goiter as well as congenital iodine deficiency syndrome due to untreated congenital hypothyroidism, which results in developmental delays and other health problems.
Vegan diets typically require special attention for iodine, for which the only substantial and reliable vegan sources are sea vegetables, iodized salt and supplements. The iodine content of sea vegetables varies widely and may provide more than the recommended upper limit of iodine intake. [1]
Kombu contains extremely high levels of iodine. While this element is essential for normal growth and development, the levels in kombu can cause overdoses; it has been blamed for thyroid problems after drinking large amounts of soy milk in which kombu was an additive. [19] It is also a source of dietary fiber.
Seek out whole foods (like fresh vegetables, fruits, and proteins) rather than processed ones (like shakes and supplements) for the biggest nutrition bang for your buck, says Diana Sugiuchi, R.D.N ...
Iodine is a micronutrient and dietary mineral that is naturally present in the food supply in some regions, especially near sea coasts but is generally quite rare in the Earth's crust since iodine is a so-called heavy element, and abundance of chemical elements typically declines with greater atomic mass.
A lot of the onus is also on food manufacturers, who remain independently responsible for “marketing safe foods, including ensuring the safety and regulatory status of the ingredients they use ...
In areas where there is little iodine in the diet, typically remote inland areas and semi-arid equatorial climates where no marine foods are eaten, iodine deficiency also gives rise to hypothyroidism, the most serious symptoms of which are epidemic goitre (swelling of the thyroid gland), extreme fatigue, mental slowing, depression, weight gain ...
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