While tobacco smoking is largely accepted as a significant source of primary indoor air pollutants, it is only recently that thirdhand smoke -- the invisible remains of cigarette smoke that deposit on carpeting, clothing, furniture and other surfaces – has become recognized as a contributor to indoor pollution. . Previous studies have shown that that nicotine in thirdhand smoke can react with the ozone in indoor air and surfaces like clothing and furniture, to form other pollutants. Lara Gundel, from Berkeley Lab (California, USA), and colleagues report that thirdhand smoke may be a major cause of significant genetic damage in human cells. Further, the team warns that chronic exposure is worse than acute exposure, with the chemical compounds in samples exposed to chronic thirdhand smoke existing in higher concentrations and causing more DNA damage than samples exposed to acute thirdhand smoke, suggesting that the residue becomes more harmful over time. Writing that: “[Thirdhand smoke] exposure is related to increased oxidative stress and could be an important contributing factor in [thirdhand smoke] -mediated toxicity,” the study authors submit that: “The findings of this study demonstrate for the first time that exposure to [thirdhand smoke] is genotoxic in human cell lines.”
Bo Hang, Altaf H. Sarker, Christopher Havel, Saikat Saha, Tapas K. Hazra, Lara A. Gundel, et al. “Thirdhand smoke causes DNA damage in human cells.” Mutagenesis (2013) 28 (4): 381-391.
Urban trees are effective at removing fine particulate air pollution.
Subtle abnormalities predict which older adults will have faster decline in visual acuity.
Moderate-intensity exercise reduces fat stored around the heart, in the liver, and in the abdomen, among type-2 diabetics.
Chlamydia trachomatis can cause mutations in the host DNA, thereby leading to the development of cancer.
Cranberry juice fortified with folic acid significantly increases adiponectin while decreasing homocysteine, among people with Metabolic Syndrome.
The invisible remains of cigarette smoke that deposit on carpeting, clothing, furniture and other surfaces may be a major cause of significant genetic damage in
Treating hypogonadal men who have type 2 diabetes with testosterone decreases insulin resistance.
Emergency room visits due to pedestrians injured while walking with cell phones have soared in recent years.
A smart phone is capable of running an outpatient closed-loop glucose control system with proper functioning 98% of the time.
Eating more beef, pork, and lamb may raise a person’s risks of type-2 diabetes, whereas reducing intake appears to trim the risk.
Exposure to low doses of the synthetic compound bisphenol A (BPA) is linked to increased risk of prostate cancer in human stem cells.
Living near asphalt that is sealed with coal tar may raise a person’s risk of getting cancer, with the greatest potential effect in young children.
The type of jobs people have may increase their risk for developing asthma.
An international study reports a link between passive smoking and syndromes of dementia.
Triclosan, an antibacterial chemical found in numerous personal care products, may contribute to an increased risk of allergy development in children.
The antibiotic-resistant “superbug” methicillin-resistant Staphylococcus aureus (MRSA) is prevalent at several US wastewater treatment plants.
Two United Nations agencies have mapped the intersection of health and climate in an age of global warming.
Long-term exposure to fine particulate matter decreases flow-mediated brachial artery dilation.
People who are exposed to mold in their homes could be at an increased risk for sarcoidosis, a chronic inflammatory lung disease.
High noise levels can put people at-risk of annoyance as well as sleep disturbance, both of which can have serious health consequences.
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Estimated to affect 125 million people worldwide, psoriasis is a chronic inflammatory condition affecting the immune system that commonly manifests in the form of thick, red, scaly patches on the skin.
Researchers from Harvard Medical School (Massachusetts, USA) found that the risk of coronary disease is almost 30% greater in psoriasis patients, and stroke risk exceeded the rate of the general population by 12%. The risk did not vary by severity of psoriasis, as patients with moderate and severe disease had a similar prevalence of heart disease and stroke. Separately, a Copenhagen University (Denmark) team studied nearly 50,000 patients who had experienced their first heart attack between 2002 and 2006, following the 462 patients with psoriasis for an average of 19.5 months and the 48,935 controls for an average of 22 months. The team found that heart attack patients with psoriasis were 26% more likely to die from cardiovascular disease, or suffer from recurrent heart attacks or strokes, and were 18% more likely to die from all causes than those without the inflammatory skin disease.