Formaldehyde in electronic cigarettes
One of the most damaging and feared components in traditional cigarettes is formaldehyde, known to be one of the main cargenoids contained in tobacco because of its combustion. And according to a recent study, it has also been detected in the vapor of electronic cigarettes. At least that reveals a recent article published in the New York Times. According to the study, formaldehyde could reach levels "close to conventional cigarette smoking," although they do not specify how "close" they could get. It is worth remembering that the liquid used in electronic cigarettes contains only nicotine, water, vegetal clicerina and propylene glycol. No formaldehyde. And of course, there is no combustion. But according to scientists, it could be generated in special cases, such as when users of electronic cigarettes modify their systems to give it more power, which would create a "micro-combustion" of the metals exposed in the parts of electronic cigarettes. The point is, they do not even know if this is a common phenomenon or only very isolated cases. This makes us think that the levels of said carcinogen are not really that high in electronic cigarettes, but still so many people are terrified of knowing his existence. Let's see an explanation to clarify things.
What is formaldehyde? Formaldehyde is a colorless gas with a fairly strong odor, consisting of a carbon atom, two hydrogen atoms and an oxygen atom, CH2O . It has very powerful antibacterial and antifungic properties. Many textile industries use formaldehyde in their production processes. It is used to create resins and adhesives found in products such as plywood. Carpet manufacturers use. Non-woven fabrics contain formaldehyde. Facial tissues, paper towels, napkins, paints, insulation foams all use formaldehyde. Perhaps its most famous use is in embalming, preserving dead tissues, at least for a short time.
With manufacturing everywhere and the use of this chemical, questions about your safety arise naturally. OSHA has broader rules on safe use and health effects. Acute short-term exposure to large amounts can be fatal. Long-term chronic exposure to inhaled or topical formaldehyde may cause respiratory disease, skin irritation and has long been a possible carcinogen. In 2011, the US government Changed its name from a "reasonable probability" of causing cancer in humans, based on animal cancer studies, to "known carcinogen." However, these health problems are mainly a risk for people who regularly work with large, industrial amounts of the substance; Which are exposed to much higher levels than the rest of us.
How are we exposed? I will not enter the industrial exhibition, as it does not apply to most of us, but in addition to releasing gas products such as carpets, upholstery and fuels , Formaldehyde is everything around us. The NIH report on cancer, 12th edition, profile of formaldehyde states found in the "air, soil, food, treated and bottled drinking water, surface water and groundwater." Our main route of exposure is breathing it, indoors or outdoors. Much of this inhaled formaldehyde comes from automobile exhaust, tobacco smoke, power plants, forest fires, and wood stoves. Outdoors, we are exposed to anywhere from 0 to 100 parts per billion (ppb) every day. Interior, which can be as much as 500 to 2000 ppb (temporary housing, as used after Hurricane Katrina measured 3-590 ppb). To a lesser extent, we ingest it in our food and water (the average American diet contains about 10 - 20mg of formaldehyde from things like apples, carrots, pears, milk, etc.), as well as some exposition through the Cosmetics.
What many people do not know is that our bodies produce and use formaldehyde as part of our normal metabolism (Final Report on Cancerous Background Paper for Formaldehyde [PDF], 2010). When we are exposed to methanol (for example, through inhalation or ingestion of foods such as citrus fruits and juices, vegetables or fermented beverages), our bodies are broken down into formaldehyde and other byproducts. Our bodies produce formaldehyde as a result of DNA demethylation (an important process for controlling gene expression, for example in embryo development) and other biological processes. It is such a regular part of human metabolism, that our naturally occurring normal blood concentrations are generally about 2 - 3Î¼g formaldehyde per gram of blood (or about 2.12-3.18Î¼g/mL) *. And it is actually a very important chemical product; Our body uses formaldehyde to form DNA and amino acids (toxicological profile for formaldehyde [PDF], ATSDR, 1999).
Role in Metabolism Formaldehyde plays an essential role in metabolism. As part of the metabolic process, formaldehyde, either from an external source or produced by our body, becomes formate (PDF) by the enzyme dehydrogenase formaldehyde. The resulting format can be eliminated by urine, subdivided into CO2 and exhaled, or used by our cellular machinery to synthesize nucleotides and nitrogenous bases, such as purines and thymidine.
Purines are two of the four basic blocks of DNA: adenine and guanine. When formaldehyde is converted into a format, the body can then use it to synthesize these basic blocks of life.
Likewise, thymidine, also called deoxythymidine, is an integral part of life. It is a nucleoside, which is a class of compounds that are components of nucleic acids; In other words, you need to make thymidine thymine nucleic acid. They also perform a lot of other important functions. Nucleosides mediate hormone signaling and play a role in blood pressure and energy transfer, among other things (Jucker, 1993). Formaldehyde provides your body with the necessary compounds to synthesize thymidine. As with slurry, if your body stopped using formaldehyde to make these basic compounds, so, all your worries would disappear, you would already be dead.
Even before the advent of industrial uses of formaldehyde, humans, as with any other animal on Earth, had been exposed to formaldehyde through the food they ate, the environments in which they lived and their Own metabolic processes. They developed the means to use the chemical for their own cellular function, as well as the ability to get rid of excess quantities that would otherwise be toxic.
How much is too much? We know that formaldehyde is actually pretty darn important to life. We also know that too much of it can be a bad thing. But, how much is too much? When do we have to start worrying?
A good place to start is to find out what is the NOAEL or Not Observable Adverse Effect Level. That is the largest dose in which there are no significant adverse effects among people exposed to the substance in question. Fortunately, the EPA has looked at that and extrapolated from animal experiments what is a safe level of exposure to formaldehyde should be. According to their calculations, a human could consume 0.2 mg/kg of formaldehyde every day, in addition to what his own body produces, without showing adverse effects, such as weight loss, and that Is taken in a large number of security buffers; The actual level of safe exposure is probably about 10 to 100 times greater than that. But, this is the EPA; They like to play it safe. Similarly, Health Canada lists a NOAEL for formaldehyde indoor air concentrations of 615 g/m3, although to avoid observable respiratory effects in children, they establish the safe exposure level covered from 8 hours to approximately 50 g/m 3. Again, these levels include very large safety buffers, with the level at which the adverse effects first manifest themselves is much, much greater. Serious effects, such as death, do not occur until the levels are even higher.Source: http://www.harpocratesspeaks.com/2012/04/demystifying-vaccine-ingredients.html