Iodine from seaweed for thyroid health Updates
Iodine from seaweed for thyroid health Updates
For the determination of iodine, 500 µL urine was diluted in 4.5 mL 1% tetramethylammonium hydroxide (TMAH) and filtered using a sterile membrane with a 0.45 µm pore size and a single-use syringe. Samples were analyzed against a urine calibration curve (standard addition curve). Internal validity of the method was verified with certified reference material (SRM); Seronorm Trace Elements Urine. The measurement uncertainty for iodine is 20% for the whole measurement range 28.
ALL ABOUTTHYROID
Although the ocean and synthroid buy its resident seaweed provide the greatest single store of iodine, consumption of seaweeds or seafoods in general do not for most populations provide the major dietary source of iodine. In most countries, this requirement is met through iodization of table salt, universal salt iodization. This is particularly important in at risk groups such as pregnant women, their neonates, females of childbearing age, or those such as vegans whose dietary preferences do not include iodine-containing foods.
Other Literature Sources
While seaweed may offer some health benefits, eating too much may cause health risks due to its iodine and heavy metal content. Going from low iodine intake to a sudden increase may also be an issue 19. Negative effects of excessive iodine are usually resolved once consumption is reduced, with high iodine intake tolerated by most healthy individuals 20. There are many different species of seaweed, each with its own unique nutritional profile. To the uninitiated, this wide variety can seem a little daunting, leaving consumers confused about which is best.
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Simply mix finely chopped seaweed into the dough with whole wheat flour, salt, and water. Fill them with your choice of vegetables, fish, or seafood, along with some rice. Therefore, India’s changing dietary patterns and fast-paced lifestyle have made thyroid disorders a health challenge worth addressing. The patient’s symptoms are consistent with hypothyroidism but also overlap with her history of PTSD and fibromyalgia. During the appointment, her clinical observations are unremarkable, with normal oxygen saturation, pulse rate and blood pressure within normal limits and afebrile.
- It’s also now well understood that iodine plays a critical role in neonatal and infant brain development.
- Dried seaweed has been dehydrated but will contain more moisture than roasted seaweed.
- The dietary preferences of vegetarians and vegans frequently result in iodine deficiency 38, 39.
- We do not include iodine in our routine batch testing as any result we get will not necessarily be meaningful for the actual product supplied to a customer.
This is because of the artificial iodisation of feed for animal health and the use of iodine disinfectants during milking. Government campaigns to promote dairy consumption indirectly increased iodine intake, resulting in an ‘accidental public health triumph’ 6. However, changing agricultural practices mean that iodine levels in dairy products have reduced in recent decades.
Future Studies
- This can result in hyperthyroidism, with symptoms such as mood swings, heart palpitations and weight loss.
- The influence on cloud formation and possible iodine intake of gaseous iodines released in seaweed-abundant coastal areas will also be examined.
- During recent years, macroalgae has entered the global food market, and has become increasingly popular in the western part of the world 12,13.
- The Japanese people, whose traditional daily diet included 5-7 grams of seaweed, were estimated to consume between 1,000 – 3,000 mcg per day without experiencing adverse consequences.
- With approximately one month of THRT, his thyroid function normalized, and the skin lesions, including rashes on the hands and finger joints, improved (Figure 4).
Equally important is the role of seaweed-derived iodine in influencing climate cloud formation 11. Iodine, particularly in seaweed-abundant coastal areas, acts as a powerful antioxidant 12 and may contribute via respiration to iodine intake in humans 13. One concern about seaweed consumption is exposure to heavy metals such as arsenic, aluminum, cadmium, lead, rubidium, silicon, strontium, and tin.176 The contamination of seaweeds with heavy metals depends on habitat or ecology, which has led to inconsistency in research findings.
Table 2.
Unfortunately, many of these symptoms can be confused with other conditions and so tests are often needed for diagnosis of hypothyroidism. Seafoods like fish, shrimp, and shellfish are rich in iodine, which supports thyroid function. Omega-3 fatty acids found in fatty fish like salmon and mackerel also help reduce inflammation and support overall thyroid health. How Seaweed Supports Thyroid HealthSeaweed is a rich source of iodine and other nutrients like selenium and zinc, which support thyroid function. A small serving of seaweed can meet or exceed the daily iodine requirement. However, excessive consumption can cause hyperthyroidism due to iodine overload.
One day in 1811, Courtois accidentally added too much sulfuric acid, causing it to release a lovely but mysterious violet-colored vapor. The vapor precipitated into crystals, which Courtois eventually passed on to fellow chemists Gay-Lussac and H. However, most commercial seaweed is farmed, not harvested from the sea, which should reduce the risk of heavy metal contamination. The label or the company’s website may provide information about the seaweed’s source.
Our study sample was small, and larger studies preferably with a controlled design including repeated measures, would be useful for future research within this topic. Studies examining the content and bioavailability of iodine and heavy metals in macroalgae and macroalgae products are also warranted. Dried seaweed or seaweed extracts are often found in foodstuffs, and recommendations for safe levels of iodine vary from 20 mg/kg in Germany to 500 mg/kg in the USA and a maximum tolerable level of 100 mg/kg dried weight in Australia 35. In the case of pregnant women and children, the recommendation is to limit brown seaweed to 1 serving per week. However, iodine content can be extremely variable depending on seaweed species, bioavailability, and losses in cooking 31, 32, 36.