Thyroglobulin is a sensitive measure of both deficient and excess
iodine intakes in children and indicates no adverse effects on thyroid function in the UIC range of 100 - 299 micrograms / L: a UNICEF / ICCIDD Study Group Report.
Restricting
the iodine intake in these sensitive people will indeed reverse the suppressive effect of iodine, and TSH will normalize to lower levels.
The amounts of
iodine intake in Kobe and Hotaka were less than those in Nishihara or Yamagata, but TGAb and / or TPOAb positivity was about the same in Nishihara, Yamagata, Kobe, and Hotaka.
Based on the reported values in seaweed, some have claimed levels of 12 mg (12,000 mcg) in Japanese diets, although a published analysis of
iodine intake in Japan found a range of 45 - 1921 mcg per day (J Nutr Sci Vitaminol (Tokyo).
Excess
iodine intake in the mother may block thyroid function in the fetus, leading to hypothyroidism and goitre, and is associated with poorer mental and psychomotor development or behaviour problems in children.22 56 64 However, the risk for adverse effects of iodine supplementation is higher in cases of preconception ID due to sudden increase of iodine intake, and should therefore not be the case in Sweden where the normal population is iodine sufficient.65
Not exact matches
As the use of iodised salt has also declined since that time,
intakes of
iodine have fallen
in both Australia and New Zealand (Eastman 1999, Gunton et al 1999, Hynes et al 2004, Skeaff et al 2002, 2005, Thomson 2002, 2004).
Iodophores used by the dairy industry, which opportunistically enter the food supply, were the major, if not the prime, contributors to
intake of
iodine in Australia and New Zealand
in the 1960s.
The researchers were especially interested
in the
intake and concentrations of nutrients that are limited or lacking
in vegetarian foods, for example vitamin B12, vitamin D, selenium,
iodine and essential fatty acids.
Earlier research shows that the
intake of
iodine has decreased
in Finland over the past years.
The daily recommended
intake of
iodine in the UK is 140 µg / day and just over half comes from dietary sources other than milk / dairy products.
Nutrient - rich «superfoods» that are certainly worth adding to boost vitamin and mineral
intake include oats (for fibre, energy, iron and B vitamins), bananas (for
iodine, potassium, folate, zinc and iron) and berries (high
in vitamin C, folate and antioxidants).
To get enough
iodine in your diet, increase your seafood and egg
intake, include seaweed and use iodised salt rather than standard table salt.
«Because increased
iodine intake, especially
in supplement form, can increase the autoimmune attack on the thyroid.
Iodine is the active ingredient in many thyroid supplements on the market, but research has shown excess iodine intake to make problems worse for the Hashimoto's
Iodine is the active ingredient
in many thyroid supplements on the market, but research has shown excess
iodine intake to make problems worse for the Hashimoto's
iodine intake to make problems worse for the Hashimoto's case.
Did you know
iodine intake has dropped approximately 50 %
in the past 20 years?
However, if dietary
iodine intake is poor, around 5 grams of iodized salt is needed to reach the recommended amount of
iodine in pregnant women.
The World Health Organization recommends 250 µg / d of daily
iodine intake, however,
in the US, our diets usually provide enough
iodine so check with your doctor to see if you need additional supplementation.
An experiment was done that resulted
in a case of hypothyroidism, which researchers misinterpreted as being caused by excessive
iodine intake.
The way to evaluate your
iodine intake is a test that measures how much
iodine you are excreting
in your urine.
In fact, studies suggest that iodine intakes have declined in the U.S., Switzerland, and New Zealan
In fact, studies suggest that
iodine intakes have declined
in the U.S., Switzerland, and New Zealan
in the U.S., Switzerland, and New Zealand.
A cautious iodization program bringing
iodine intake to a low recommended level is associated with an increase
in the prevalence of thyroid autoantibodies
in the population.
Topliss (2016) also mentions, «Discouraging
iodine mega-supplementation may not preclude appropriate physiological supplementation
in pregnancy to a total
intake of 250 µg / day» (11, p. 495).
Caution should therefore be heeded before adding supplemental
iodine to the regimen of any patient with thyroid autoimmunity, since, «Iodine intake modulates the pattern of thyroid diseases, even in cases of slight differences in intake and doses below 150 μg daily recommended for preventing IDD»
iodine to the regimen of any patient with thyroid autoimmunity, since, «
Iodine intake modulates the pattern of thyroid diseases, even in cases of slight differences in intake and doses below 150 μg daily recommended for preventing IDD»
Iodine intake modulates the pattern of thyroid diseases, even
in cases of slight differences
in intake and doses below 150 μg daily recommended for preventing IDD» (9).
Thyroid autoantibodies, specifically TG and TPO, were statistically higher
in those with greater
iodine intake (3).
What is your exact daily dietary
intake, age, weight, physical activity level and are your hormones, thyroid, B12 and
iodine all
in normal range?
In individuals with anti-thyroid peroxidase (TPO) or anti-thyroglobulin (TG) antibodies, the incidence of elevated TSH increased with greater levels of
iodine intake (18).
What's more, individuals with a family history of Hashimoto's thyroiditis should be especially cautious about
iodine intake, since the autoimmune reaction induced by
iodine is particularly likely
in genetically susceptible individuals.
Animal models strongly support this pathophysiological mechanism whereby
iodine induces thyroid autoimmunity, as, «Excessive
iodine intake can precipitate spontaneous thyroiditis
in genetically predisposed animals, by increasing the immunogenicity of thyroglobulin (TG)» (19).
Meanwhile, however, «The spectrum of thyroid diseases has undergone a significant change ranging from simple goiter to toxic nodular goiter, Hashimoto's thyroiditis, and thyroid cancer accompanied by the increase
in iodine intake, especially for thyroid cancer with an annual increase of 14.51 %
in China» (3).
Intake of 3 - 6 mg / day, an amount commonly consumed
in Japan without increased incidence of autoimmune thyroiditis or hypothyroidism, may be necessary to support not only thyroid hormone production, but
iodine's important antioxidant functions
in the breast and other tissues
in which this trace mineral is concentrated.
A moderate
intake of
iodine in foods should not be problematic except
in the most sensitive cases.
A study shows how people
in Japan and Korea, which habitually include seaweeds into their diets, could be relatively immune to negative effects of high
iodine intake, but one of these single seaweed - rich meals could already present health risks to unhabituated people
in low -
iodine consuming countries.
It produces the thyroid hormone, which helps control the body's metabolism as well as many other organ functions, from
iodine and can not produce hormones when the body lacks
iodine.2 Some thyroid troubles originate from an
iodine deficiency, leading to a simple increase
in iodine intake to improve health.4 However, problems can also occur when the thyroid produces either too much or too little of its hormone because there is trouble with the gland itself or with any of the other glands
in the body it communicates with.
It can be tricky for moms - to - be to get the right amount
in their diet, however, because many might shy away from
iodine - rich foods (like fish) or reduce their sodium
intake to improve heart health.
Concerns over
iodine deficiency during pregnancy and lactation (breastfeeding) have resulted
in a number of organizations issuing guidelines and recommendations for
iodine intake.
Soy does indeed have so - called «goitrogenic» compounds (as does broccoli - family vegetables and flax seeds), which can interfere with thyroid function
in people with marginal
iodine intake.
Alot of misinformation about soy exists including fertility
in males see http://nutritionfacts.org/videos/soy-hormones-male-infertility/; the issue re: thyroid and soy... Dr. Greger addressed
in a 8/24/11 response... «Soy does indeed have so - called «goitrogenic» compounds (as does broccoli - family vegetables and flax seeds), which can interfere with thyroid function
in people with marginal
iodine intake.
«Although iodized salt is a principal source of dietary
iodine, suggesting that reduced salt
intake could lead to
iodine deficiency, the salt
in most processed foods
in the United States is not iodized «[2]
As an example he points to the Japanese whose average daily
intake of
iodine is as high as almost 14,000 mcg per day due to their diet which is rich
in sea weeds!
It is safer and better to use only natural forms of
iodine found
in foods such as chlorella, spirulina, or kelp as it will not lead to any harmful side effects
in case your
iodine intake is too high.
Everyone needs
iodine, but this is especially important for people who want to eat well, since many healthy plant foods like flax, soy, and broccoli have what are called goitrogenic compounds, which can interfere with thyroid function
in people with marginal
iodine intake.
But assessment of
iodine status
in pregnancy is difficult, and it remains unclear whether
iodine intakes are sufficient
in this group, leading to calls for
iodine supplementation during pregnancy
in several industrialized countries.
2 billion individuals worldwide have insufficient
iodine intake, with those
in south Asia and sub-Saharan Africa particularly affected.
T4 administration engendered a greater (P < 0.01) decrease
in thyroid volume (from 32 ml to 17 ml, P < 0.0001) than did
intake of
iodine (3 3 ml to 21 ml.
The differences
in dietary
iodine intake do not affect TGAb and / or TPOAb positivity.
Well, there are natural goitrogenic compounds
in this family of vegetables that can interfere with thyroid function
in people with marginal
iodine intake.
I am slowly increasing my
iodine intake to eventually reach mega-doses of it, but follow everything else
in the PHD.
In studies that have specifically looked at iodine intake among Japanese people, the mean dietary intake (estimated from urinary iodine excretion) was in the range of 330 to 500 mcg per day, which is at least 2.5-fold lower than 13.8 mg per day.&raqu
In studies that have specifically looked at
iodine intake among Japanese people, the mean dietary
intake (estimated from urinary
iodine excretion) was
in the range of 330 to 500 mcg per day, which is at least 2.5-fold lower than 13.8 mg per day.&raqu
in the range of 330 to 500 mcg per day, which is at least 2.5-fold lower than 13.8 mg per day.»
In a survey of 3,300 children aged 6 - 12 years from five continents, thyroid glands were twice as large in children with high dietary iodine intake (about 750 mcg per day), compared with children with more normal iodine intak
In a survey of 3,300 children aged 6 - 12 years from five continents, thyroid glands were twice as large
in children with high dietary iodine intake (about 750 mcg per day), compared with children with more normal iodine intak
in children with high dietary
iodine intake (about 750 mcg per day), compared with children with more normal
iodine intake.
In addition, there is epidemiological evidence that populations with «sufficient» or «high normal» dietary
iodine intake have a higher prevalence of autoimmune thyroiditis, compared with populations with deficient
iodine intake.