Study: Exposure to tobacco smoke residue on surfaces just as bad as breathing it in.

Photo: pat138241/freedigitalphotos.net

Third-hand smoke is just as deadly as first-hand smoke, says a scientist at the University of California, Riverside who, along with colleagues, conducted the first animal study of the effects of third-hand smoke.
While first-hand smoke refers to the smoke inhaled by a smoker and second-hand smoke to the exhaled smoke and other substances emanating from a burning cigarette that can get inhaled by others, third-hand smoke is the second-hand smoke that gets left on the surfaces of objects, ages over time and becomes progressively more toxic.

“We studied, on mice, the effects of third-hand smoke on several organ systems under conditions that simulated third-hand smoke exposure of humans,” said Manuela Martins-Green, a professor of cell biology who led the study.  “We found significant damage occurs in the liver and lung. Wounds in these mice took longer to heal.  Further, these mice displayed hyperactivity.”

The results of the study provide a basis for studies on the toxic effects of third-hand smoke in humans and serve to inform potential regulatory policies aimed at preventing involuntary exposure to third-hand smoke.

Third-hand smoke is a potential health threat to children, spouses of smokers and workers in environments where smoking is, or has been, allowed. Contamination of the homes of smokers by third-hand smoke is high, both on surfaces and in dust, including children’s bedrooms.  Re-emission of nicotine from contaminated indoor surfaces in these households can lead to nicotine exposure levels similar to that of smoking. Third-hand smoke, which contains strong carcinogens, has been found to persist in houses, apartments and hotel rooms after smokers move out.

The  team was surprised to find that the damage caused by third-hand smoke extends to several organs in the body.

“More recently we have found that exposure to third-hand smoke results in changes that can lead to type II diabetes even when the person is not obese,” Martins-Green said. “There is still much to learn about the specific mechanisms by which cigarette smoke residues harm nonsmokers, but that there is such an effect is now clear.  Children in environments where smoking is, or has been allowed, are at significant risk for suffering from multiple short-term and longer health problems, many of which may not manifest fully until later in life.”

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Seeing is believing for parents who smoke: Air quality monitoring helps reduce children’s exposure to smoke in the home

According to a new study, providing parents who smoke with measurements of their home’s indoor air quality (IAQ), in addition to usual smoking advice, leads to better IAQ and reduces children’s exposure to second hand smoke.

The study carried out by scientists at the University of Aberdeen and  University of Edinburgh aimed to establish whether measurements of IAQ would provide an incentive for parents who smoke to change their habits.

The study which involved 40 families and took place over one month was not aimed at getting parents to quit; but to change their smoking patterns to ensure that the child was not exposed.  This included encouraging them to smoke outside of the home and asking visitors not to smoke in their home. 

 “Smoking is one of the most harmful, but potentially modifiable, lifestyle activities...We have previously observed how parents who smoke find it very hard to quit despite understanding the harmful effects of second hand smoke on children, ” said Dr Steve Turner, Senior Clinical Lecturer in Child Health at the University of Aberdeen

 “We measured IAQ over a 24 hour period and in half of the homes studied and showed parents the IAQ levels (which reflect smoke concentration in the air in their homes) to improve understanding of the harm done to the children. In the remainder of the houses we gave the IAQ measurement results back at the end of the month long study. In homes where the IAQ information was provided at the start of the study, air quality improved by one third over the month long study.”

Parents reported they found getting a number which described how high their indoor air quality was provided extra motivation to change their smoking behaviour. Based on the results of the study, the researchers hope to use indoor air quality measurements as part of smoking interventions in different settings – for example maternity hospitals and occupational health.

Looking to reduce airborne tobacco smoke and odor? Connect with an indoor air quality expert via live chat or twitter for information on how an air purifier for smoke and improve your indoor air.

Demystifying household chemicals: Phenol

Some of the biggest brand-name cleaning products
contain phenol (and other harmful chemicals).
Image: FreeDigitalPhotos

"Demystifying household chemicals" is a series that aims to inform people on the types of chemicals found in and around our homes. The series will be featured every Wednesday where a different chemical, and its everyday uses, will be discussed.

Chemicals surround us all the time and there are always warnings that pop up about this chemical causing terrible side effects or that chemical leading to cancer. It can be overwhelming to keep track of which chemicals are ‘safe’ and which are not. 

Phenol, also known as carbolic or phenic acid, can be quite a complex chemical as it is used in many different fields. It is an aromatic compound, as are some other chemicals discussed in previous posts, and though it can occur naturally, it is predominantly chemically produced.

Normally in solid form, it is often liquefied for commercial use and has a sickly sweet smell. Surprisingly, phenol can be both good and bad for you. 

Good phenol

Naturally occurring phenol is actually good for you. It is made up of a mixture of human and animal waste, coal tar, creosote and decomposing organic materials. Humans even produce and excrete small amounts of it. 

Many different types of food contain phenol.  These foods are antioxidants and are also known to have other protective properties. 

Some fruits containing phenol include cherries, apples, plums and grapes. You can also find phenols in vegetables such as red cabbage, yellow onions, potatoes and celery. For more information on which foods are full of good phenol, visit LiveStrong.

 

Bad phenol

Where phenol gets to be a problem is when it is produced chemically. This chemical ranks among the top 50 chemicals produced per year in the United States, at over three billion pounds.

Worldwide, six billion pounds of phenol are produced every year. It is also a component used to produce bisphenol A (BPA),  the chemical that was recently banned in baby bottles by the EPA. 

Toothpaste contains triclosan, a type of phenol.
Image: FreeDigitalPhotos

Phenol can be found in the following products:

• Mouthwash
• Salves
• Throat sprays
• Paint
• Rubber
• Soap
• Toys
• Cigarette smoke
• Wood-burning smoke
• Toothpaste
• Sunscreen
• Lotion
• Cleaning products
• Acne medications
• Sugar substitutes

So what does phenol do to the body?

In large quantities, bad phenol can have devastating effects on both your skin and your internal organs.

Adults working in the manufacturing and petroleum fields may be at risk. Long-term exposure in the workplace can cause heart disease.

Ingesting the chemical in liquid form can cause damage to your stomach and intestines and can even lead to death. Skin contact can cause irritations, blisters and burns.

In lower doses, phenol can cause lethargy and vomiting among kids exposed to disinfectants containing the chemical. 

For more detailed information on phenol, read up on a study done by the Agency for Toxic Substances and Disease Registry.

Do you have any questions about phenol? Post your questions or comments here!

What you can do at home

It is certainly a good idea to pick through your household goods and see which products you can do without.

There are cleaning products out there that are safer for you, your family and the environment.  Other products may be a little more difficult to make do without.

This is why it is a good idea to have an air purifier in your home. With an air purifier that contains an activated carbon filter, you can get rid of noxious fumes and chemicals from your household products.

AllerAir has a selection of air purifiers that cater to different needs; whether it’s for chemical and odor control, tobacco smoke or any other concerns you have with your indoor air quality. Contact us for more information.

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'Thirdhand smoke' may be bigger health hazard than previously believed

Scientists are reporting that so-called "thirdhand smoke" — the invisible remains of cigarette smoke that deposits on carpeting, clothing, furniture and other surfaces — may be even more of a health hazard than previously believed. The study, published in ACS' journal, Environmental Science & Technology, extends the known health risks of tobacco among people who do not smoke but encounter the smoke exhaled by smokers or released by smoldering cigarette butts.

Yael Dubowski and colleagues note that thirdhand smoke is a newly recognized contributor to the health risks of tobacco and indoor air pollution. Studies show that that nicotine in thirdhand smoke can react with the ozone in indoor air and surfaces like clothing and furniture, to form other pollutants. Exposure to them can occur to babies crawling on the carpet, people napping on the sofa, or people eating food tainted by thirdhand smoke. 

In an effort to learn more about thirdhand smoke, the scientists studied interactions between nicotine and indoor air on a variety of different materials, including cellulose (a component of wood furniture), cotton, and paper to simulate typical indoor surfaces. They found that nicotine interacts with ozone, in indoor air, to form potentially toxic pollutants on these surfaces. "Given the toxicity of some of the identified products and that small particles may contribute to adverse health effects, the present study indicates that exposure to [thirdhand smoke] may pose additional health risks," the article notes.