Re: What does this say iodine can displace ?

For example, flourine can displace chlorine, bromine and iodine because flourine has a lower atomic weight than the other three. Similarly, chlorine can displace bromine and iodine because they both have a higher atomic weight. Likewise, bromine can displace iodine from the body because iodine has a higher atomic weight. But a reverse order is not possible. A knowledge of this well-known chemical law brings us to a consideration of the addition of chlorine to our drinking water as a purifying agent. We secure a drinking water that is harmful to the body not because of its harmful germ content but because the chlorine content now causes the body to lose the much-needed iodine..."

It seems to me this is the reason why we should constantly replenish our bodies with iodine.  It is safe to assume various populations of the world are now exposed to higher amounts of fluorine and chlorine relative to 100 years ago.  I am sure many irrigation sprinkler systems have used chlorinated and fluorinated water.  Does this have an impact on the iodine content of soil?  Would crops treated with irrigation systems still be considered organic?  Now I am starting to see why so many people are benefiting from iodine supplementation.  I still say get a balanced amount of elements and trace minerals.