Sri Lanka - Chronic renal failure in the north-central province
Chronic renal failure in the north-central province and arsenic: Science versus myth
June 20, 2011, 12:00 pm
By Prof. Oliver A.Ileperuma, University of Peradeniya
...................Role of fluoride
A chance observation during the examination of the water storage pots and cooking utensils was that they develop holes in them after prolonged use. Chemically this is a well-known fact where aluminium dissolves forming fluoro complexes under high fluoride stress compared to low fluoride water in the wet zone. What is worse is that these holes are often sealed with lead solder and lead is known to be extremely toxic to the kidney. These complexes are readily absorbed by the body and once inside the body, excessive fluoride is released into the body organs. In experiments conducted in the USA on rats, it was found that fluoride as low as 1 part per million (ppm) in the presence of aluminium resulted in the death of the animals and the postmortem examinations revealed that the rats died due to kidney failure. Fluoride in excessive amounts is particularly toxic to the kidney and hence it is a reasonable theory to explain the occurrence of the disease. The type of aluminium pots used were of inferior quality and are made by melting scrap aluminium and usually contains other heavy metals as impurities such as lead, chromium and nickel. Good quality aluminium cooking pots are anodised and this gives a protective layer of aluminium oxide to the pot while these inferior quality pots are not anodised. All these heavy metals are toxic to the kidney since they are finally filtered by the kidney before they are excreted. Furthermore, the use of sub-standard aluminium pots results in enhancing the fluoride intake since each Al can carry six fluoride ions into the body when it formsaluminofluoro complexes and they have the special ability to travel through biological membranes.
The use of aluminium pots came into practice only in the last two decades. Clay pots used earlier have the ability to adsorb fluoride present in water and this explains why the disease was noted only in the last decade. Generally it requires at least 10-15 years of continuous exposure for this type of chronic poisoning to occur and damage to the kidney.....................
June 20, 2011, 12:00 pm
By Prof. Oliver A.Ileperuma, University of Peradeniya
...................Role of fluoride
A chance observation during the examination of the water storage pots and cooking utensils was that they develop holes in them after prolonged use. Chemically this is a well-known fact where aluminium dissolves forming fluoro complexes under high fluoride stress compared to low fluoride water in the wet zone. What is worse is that these holes are often sealed with lead solder and lead is known to be extremely toxic to the kidney. These complexes are readily absorbed by the body and once inside the body, excessive fluoride is released into the body organs. In experiments conducted in the USA on rats, it was found that fluoride as low as 1 part per million (ppm) in the presence of aluminium resulted in the death of the animals and the postmortem examinations revealed that the rats died due to kidney failure. Fluoride in excessive amounts is particularly toxic to the kidney and hence it is a reasonable theory to explain the occurrence of the disease. The type of aluminium pots used were of inferior quality and are made by melting scrap aluminium and usually contains other heavy metals as impurities such as lead, chromium and nickel. Good quality aluminium cooking pots are anodised and this gives a protective layer of aluminium oxide to the pot while these inferior quality pots are not anodised. All these heavy metals are toxic to the kidney since they are finally filtered by the kidney before they are excreted. Furthermore, the use of sub-standard aluminium pots results in enhancing the fluoride intake since each Al can carry six fluoride ions into the body when it formsaluminofluoro complexes and they have the special ability to travel through biological membranes.
The use of aluminium pots came into practice only in the last two decades. Clay pots used earlier have the ability to adsorb fluoride present in water and this explains why the disease was noted only in the last decade. Generally it requires at least 10-15 years of continuous exposure for this type of chronic poisoning to occur and damage to the kidney.....................
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9:46 AM
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