Fear of using salt on medical advice, especially those with hypertension.
Less than 50% of households in United States use iodized salt.
Radioactive Iodine used in diagnostic testing exacerbated an iodine-deficient state.
Exposures to chemicals and toxins. Goitrogen is a substance that decreases iodine uptake as well as inhibits iodine from
binding where it is needed. They include:
• Chlorine in pools, cleaning products, water supply, steam from dishwasher, sucrolose (Splenda).
• Fluoride in water supply, toothpaste, dental treatments, mouthwash.
• Bromide in some soft drinks (Mountain Dew & some Gatorades), baked goods (they used to contain iodine but it was
replaced with bromide in the 1970’s), pesticides, hot tubs, fumigant of produce, and some medications
• Declining mineral levels due to soil erosion and poor farming techniques.
• Failure to eat sufficient iodine-containing foods.
• A combination of any or all of these.

from :

http://biomedx.com/microscopes/rrintro/rr4.html


"MINERAL ASSIMILATION is affected by pH. Minerals have
different pH levels at which they can be assimilated
into the body. Minerals on the lower end of the atomic
scale can be assimilated in a wider pH range, and
minerals higher up on the scale require a narrower and
narrower pH range in order to be assimilated by the
body. For example….

Sodium and magnesium have wide pH assimilation ranges.

It narrows somewhat for calcium and potassium.
Narrows more for manganese and iron.
More for zinc and copper.
More for iodine.
Iodine, which is high up on the atomic scale, requires
near perfect pH for its assimilation into the body.

Iodine you may know, is one of the most important
minerals for proper functioning of the THYROID. But,
the thyroid doesn't get access to Iodine unless the
body pH is near perfect. "