== >> From: sol <[email protected]> >> Date: 23 January 2010 6:53:28 AM >> To: [email protected] >> Subject: Re: CS>article, "Silver is a potent nerve cell toxicant"
>> Can anyone discredit that study, how it was performed, and its >> conclusions? Here is the link again: >>> http://www.environmentalhealthnews.org/ehs/newscience/silver-is- >>> potent-neurotoxicant >> I mean aside from saying "it ain't true" can someone really >> deconstruct it scientifically? >> thanks, >> sol > I've read most of the 32 page study and wouldn't try to discredit > it but just try to put it into perspective. How accurately does > this lab test represent a real life situation? They used DNA cells > floating in a bath of 'pure' silver water' (not blood or plasma). > At 'high concentrations' the silver was toxic. At very low > concentrations it seemed to protect the cells. (At least thats how > it appeared to me.) > Perhaps I missed it but I couldn't find any description of what > type of silver it was or how it was prepared or how the strength > was determined. (Was it silver salt, electrolytic silver etc). [...] > I hope other listers will read the study and comment. It makes > some interesting suggestions about how silver works. > Finally, I'm not a scientist so I could be misunderstanding the > study entirely. >David Most of these studies use silver nitrate (AgNO3) as the source of silver ions. In this study, page 8 states: "or varying concentrations of AgNO3 in water. As a control for any effect of NO3, we included controls containing NaNO3" http://ehp.niehs.nih.gov/members/2009/0901149/0901149.pdf The use of sodium nitrate (NaNO3) as a control is highly misleading. Silver Nitrate and Sodium Nitrate are completely different substances. Sodium Nitrate is a preservative, used in sausages for example. You can eat it without too much harm. Silver nitrate is highly corrosive and will destroy most living things. You cannot eat it. The lethal dose is only 2 gms. Here is the MSDS sheet: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Material Safety Data Sheet Silver Nitrate EMERGENCY OVERVIEW Appearance: colorless or white. Danger! Strong oxidizer. Contact with other material may cause a fire. May cause cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood). May cause liver and kidney damage. Corrosive. Causes eye and skin burns. May cause severe respiratory tract irritation with possible burns. May cause severe digestive tract irritation with possible burns. Target Organs: Blood, kidneys, liver. Potential Health Effects Eye: Causes eye burns. May cause chemical conjunctivitis and corneal damage. Skin: Causes skin burns. May cause skin rash (in milder cases), and cold and clammy skin with cyanosis or pale color. Ingestion: May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. May cause perforation of the digestive tract. May cause systemic effects. Lethal dose for humans is 2 grams. Inhalation: Causes severe irritation of upper respiratory tract with coughing, burns, breathing difficulty, and possible coma. Causes chemical burns to the respiratory tract. Aspiration may lead to pulmonary edema. May cause systemic effects. Chronic: May cause methemoglobinemia, which is characterized by chocolate-brown colored blood, headache, weakness, dizziness, breath shortness, cyanosis (bluish skin due to deficient oxygenation of blood), rapid heart rate, unconsciousness and possible death. Effects may be delayed. Chronic inhalation or ingestion may cause argyria characterized by blue-gray discoloration of the eyes, skin and mucous membrances. Chronic skin contact may cause permanent discoloration of the skin. Section 4 - First Aid Measures Eyes: Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation with water is required (at least 30 minutes). Skin: Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes. Ingestion: Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately. Notes to Physician: Treat symptomatically and supportively. Section 313 This material contains Nitric Acid, Silver(1+) Salt (listed as ** undefined **), 100%, (CAS# 7761-88-8) which is subject to the reporting requirements of Section 313 of SARA Title III and 40 CFR Part 373. http://avogadro.chem.iastate.edu/MSDS/AgNO3.htm ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ It is not surprising that any study using silver nitrate as the source of silver ions will conclude that silver is harmful. But this is a false conclusion. Silver ions by themself are non-toxic to humans and have tremendous healing effects. However, like most substances, silver combined with other substances can have effects that range from benign to lethal. This is often used to persuade people that silver ions are harmful, and should be banned. Regards, Mike == -- The Silver List is a moderated forum for discussing Colloidal Silver. Instructions for unsubscribing are posted at: http://silverlist.org To post, address your message to: [email protected] Address Off-Topic messages to: [email protected] The Silver List and Off Topic List archives are currently down... List maintainer: Mike Devour <[email protected]>
