The case is the case is iodine deficiency, especially in children and pregnant women. But apparently the case of excess iodine are also present and often ignored.
Just how the consumption of iodine is ideal?
In general, the researchers say that the intake of iodine depends on each person and place to live. In areas with low soil iodine, and people who eat mainly local food need more iodine.
In the United States, adults are advised to get 150 micrograms of iodine per day, pregnant women should get 220 micrograms while breast-feeding mothers should get 290 micrograms.
While the high safety margin that can still be tolerated according to the National Institutes of Health in adults is 1100 micrograms of iodine per day. However, most Americans will get more or less than 800 micrograms of iodine per day through diet.
American Thyroid Association recommends that pregnant and lactating women should take vitamin with iodine due to iodine deficiency may increase risk of miscarriage and thyroid problems in the mother, other than mental defects in babies.
While in China the average person consume 400 micrograms of iodine supplements. The results of studies in China show there are about 800 micrograms of iodine per day when dietary factors enter. The results of these studies indicate that, at least people in China should get no more than 800 micrograms per day.
Should not take iodine supplements with more than 150 micrograms in a daily dose.
And most Americans could skip the iodine supplements at all. Overall, the number of adequate iodine intake in the United States. But there are certain people who may require these supplements, including pregnant women.
Effects of excess and deficiency of iodine
A new study has examined the amount of excess iodine intake. Excessive iodine in the diet can cause subclinical hypothyroidism, which has been linked to heart disease.
Though iodine deficiency has been more the focus of a major health problem worldwide, but the new study focused on the potential loss of excess iodine.
If iodine deficiency during fetal development and early childhood is a major cause of brain disorders in most countries but little is known about the intake of iodine that can be interpreted as the excess iodine.
Chinese researchers randomly observed in healthy adults to take different doses of iodine supplements for 4 weeks. The researchers found that, at a relatively higher dose of 400 micrograms a day, study participants began to develop a condition known as subclinical hypothyroidism.
The results of new studies have been published in the American Journal of Clinical Nutrition. A condition with no obvious symptoms of hypothyroidism, usually include issues such as fatigue, depression, dry skin, and weight gain.
In the study, the study participants taking 400 micrograms of iodine supplements. The study participants get about 800 micrograms of iodine per day when dietary factors enter. The results of these studies indicate that, at least should get no more than 800 micrograms per day.
Subclinical hypothyroidism have no obvious symptoms, but studies have linked these conditions with an increased risk of heart disease long term.
The study does not prove that subclinical hypothyroidism is caused by excess iodine intake. However, researchers worried that maybe it would have an impact on health.
But in general, the researchers think that the effect of excess iodine may depend on each person and place to live. In areas with low soil iodine, and people who eat mainly local food will have a high risk of iodine deficiency.
It is unclear whether the adults in the study had adequate iodine intake in early life. If not, it can be a factor in their response to supplements of iodine.
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