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1) How much fluoride is in “fluoridated salt”?
Salt is most commonly fluoridated at 250 parts per million (ppm) (range 200 - 350ppm) which means 2,5 mg of fluoride for every 10 grams of salt.
It was presumed that the “individual application” (meaning use of the salt shaker at the table, for the “sprinkling over food”) would contribute 1 to 4 g of the daily salt intake, thus a person would take in 1 mg of fluoride a day at a salt intake of 4 grams a day - 1 mg/day being the “optimal” dose of fluoride intake to “protect against caries”.
However, the majority of the fluoridated salt is not used for “sprinkling over food” but for domestic food preparation (cooking, baking, etc) - just like fluoridated water is not merely used for drinking. The use of fluoridated salt (250 ppm) for baking alone may provide much more than the “optimal” intake already for anyone consuming baked goods.
2) When did the use of fluoridated salt start?
In 1955 Switzerland became the first country to fluoridate salt, originally at 90 ppm. The amount was later raised to 250 ppm. France became the second country to do so in 1986, quickly followed by Jamaica and Costa Rica where there is now “universal” salt fluoridation.
3) What is “universal” salt fluoridation?
“Universal” salt fluoridation means that all salt destined for human consumption is fluoridated - not just the “salt in the shaker on the table”. This situation exists in numerous cantons in Switzerland, as well as many countries in South America.
Jamaica, Costa Rica, Columbia are all countries with such “universal” salt fluoridation.
“Universal” salt fluoridation is now described as the “ideal situation” by dental public health experts (Marthaler, 2000).
“Universal” salt fluoridation is being set up through legal channels. It is being mandated on national levels.
"Dental and Public health administrators should be aware of the total fluoride exposure in the population before introducing any additional fluoride programme for caries prevention." - World Health Organization. (1994). Fluorides and Oral Health. WHO Technical Report Series 846.
FLUORIDATED SALT
The use of fluoridated salt is becoming increasingly widespread across the globe. While the US & Canada do not yet have salt fluoridation programs, it is currently estimated that more people in the world are exposed to fluoridated salt than fluoridated water. Thus, this source of fluoride exposure is becoming increasingly important and insidious. Fluoridated salt usually contains about 250 ppm fluoride, which would result in a daily intake of 2.5 mg of fluoride per day for people consuming 10 grams of salt. Countries with extensive salt fluoridation programs include: Austria, Bolivia, Columbia, Costa Rica, Dominican Republic, France, Germany, Honduras, Nicaragua, Panama, Switzerland, and Venezuela.
Originally posted by juleol
I have heard about this, but I have really no idea whether they add it to salt here.
Originally posted by ShadowAngel85
Originally posted by juleol
I have heard about this, but I have really no idea whether they add it to salt here.
They have to mention it somewhere on the box.
I just checked out our salt and it's without Fluoride, but the Company that sells it, also offers fluoridated salt but it's specially marked (There's a big "+Fluorid" label directly on the logo, so you can't miss it)
Usually in europe companies are forced to clearly mark their products and state what's ingredients are in it.
7) Are there any warning labels on fluoridated salt packages?
Generally not. In Europe it usually only says “fluoridated salt”. The only European country we know of so far that has a warning label on some fluoridated salt is France. It says:
“Do not consume if drinking water contains more than 0.5 milligrams of fluoride per liter"
Guidelines drafted by PAHO in 2001 concerning mandatory salt fluoridation in South America specified that the following sentence should be on the labels:
“Do not consume or sell this product in areas where water for human consumption has fluorine levels higher than 0.7 ppm”
In Belgium fluoridated salt has been banned, as of 2002.
Originally posted by ShadowAngel85
Originally posted by juleol
I have heard about this, but I have really no idea whether they add it to salt here.
They have to mention it somewhere on the box.
I just checked out our salt and it's without Fluoride, but the Company that sells it, also offers fluoridated salt but it's specially marked (There's a big "+Fluorid" label directly on the logo, so you can't miss it)
Usually in europe companies are forced to clearly mark their products and state what's ingredients are in it.