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Cancer Statistics About Hispanics Released

September 18, 2012 Comments off

Cancer Statistics About Hispanics Released
Source: American Cancer Society

A new Cancer Facts & Figures for Hispanics/Latinos has been released in conjunction with National Hispanic Heritage Month. This publication is updated every 3 years and is a resource for current information about cancer among Hispanics. But you may be wondering why we produce a 35-page report devoted solely to cancer statistics for Hispanics.

For 60 years the American Cancer Society’s Research department has promoted cancer prevention and control by providing cancer data in a user-friendly format called Cancer Facts & Figures. Over the years, new Facts & Figures publications have been developed to highlight a particular cancer type or a specific population. In 2000, to answer the increasing demand for more in-depth information on cancer in the growing Hispanic community, the inaugural Cancer Facts & Figures for Hispanics/Latinos was introduced.

See: Cancer Now Leading Cause of Death in US Hispanics (Science Daily)

Parents’ Perceptions of Skin Cancer Threat and Children’s Physical Activity

September 6, 2012 Comments off

Parents’ Perceptions of Skin Cancer Threat and Children’s Physical Activity
Source: Preventing Chronic Disease (CDC)

Introduction
Sun exposure is a major risk factor for skin cancer, but without physical activity, children are at risk of childhood obesity. The objective of this study was to explore relationships between parental perceptions of skin cancer threat, sun protection behaviors, physical activity, and body mass index (BMI) in children.

Methods
This is a cross-sectional analysis nested within the Colorado Kids Sun Care Program sun safety intervention trial. In summer 2007, parent telephone interviews provided data on demographics, perceptions of skin cancer threat, sun protection behaviors, and physical activity. Physical examinations provided data on phenotype, freckling, and BMI. Data from 999 Colorado children born in 1998 were included in analysis. We used analysis of variance, Spearman’s rho (ρ) correlation, and multivariable linear regression analysis to evaluate relationships with total amount of outdoor physical activity.

Results
After controlling for sex, race/ethnicity, skin color, and sun protection, regression analysis showed that each unit increase in perceived severity of nonmelanoma skin cancer was associated with a 30% increase in hours of outdoor physical activity (P = .005). Hours of outdoor physical activity were not related to perceived severity of melanoma or perceived susceptibility to skin cancer. BMI-for-age was not significantly correlated with perceptions of skin cancer threat, use of sun protection, or level of physical activity.

Conclusion
The promotion of sun safety is not likely to inhibit physical activity. Skin cancer prevention programs should continue to promote midday sun avoidance and sun protection during outdoor activities.

Environmental Causes of Breast Cancer and Radiation From Medical Imaging Findings — From the Institute of Medicine Report

August 1, 2012 Comments off

Environmental Causes of Breast Cancer and Radiation From Medical Imaging Findings — From the Institute of Medicine Report

Source: Archives of Internal Medicine

Susan G. Komen for the Cure asked the Institute of Medicine (IOM) to perform a comprehensive review of environmental causes and risk factors for breast cancer. Interestingly, none of the consumer products (ie, bisphenol A, phthalates), industrial chemicals (ie, benzene, ethylene oxide), or pesticides (ie, DDT/DDE) considered could be conclusively linked to an increased risk of breast cancer, although the IOM acknowledged that the available evidence was insufficient to draw firm conclusions for many of these exposures, calling for more research in these areas. The IOM found sufficient evidence to conclude that the 2 environmental factors most strongly associated with breast cancer were exposure to ionizing radiation and to combined postmenopausal hormone therapy. The IOM’s conclusion of a causal relation between radiation exposure and cancer is consistent with a large and varied literature showing that exposure to radiation in the same range as used for computed tomography will increase the risk of cancer. It is the responsibility of individual health care providers who order medical imaging to understand and weigh the risk of any medical procedures against the expected benefit.

Susan G. Komen for the Cure, the largest grassroots network of breast cancer survivors and activists in the United States, asked the Institute of Medicine (IOM) to perform a comprehensive and evidence-based review of environmental causes and risk factors for breast cancer, with a focus on identifying evidence-based actions that women can take to reduce their risk.1 Environmental exposures were defined broadly to include all factors not genetically inherited, and the IOM committee appointed to write this report included academicians and chairs from departments of environmental health, toxicology, cancer epidemiology, preventive medicine, and biostatistics in addition to advocates for patients with breast cancer. Committee members conducted their own reviews of the peer-reviewed epidemiological and basic science literature, commissioned several papers specifically for their report, and drew on evidence-based reviews already completed by organizations such as the Agency for Research on Cancer and the World Cancer Research Fund International. The publication Breast Cancer and the Environment: A Life Course Approach was released online in December 2011.

Measuring Resilience in Adult Women Using the 10-Items Connor-Davidson Resilience Scale (CD-RISC). Role of Trauma Exposure and Anxiety Disorders

July 15, 2012 Comments off

Measuring Resilience in Adult Women Using the 10-Items Connor-Davidson Resilience Scale (CD-RISC). Role of Trauma Exposure and Anxiety Disorders

Source: PLoS ONE

Purpose

Resilience is the ability of individuals to adapt positively in the face of trauma. Little is known, however, about lifetime factors affecting resilience.

Methods

We assessed the effects of psychiatric disorder and lifetime trauma history on the resilience self-evaluation using the Connor-Davidson Resilience Scale (CD-RISC-10) in a high-risk-women sample. Two hundred and thirty eight community-dwelling women, including 122 participants in a study of breast cancer survivors and 116 participants without previous history of cancer completed the CD-RISC-10. Lifetime psychiatric symptoms were assessed retrospectively using two standardized psychiatric examinations (Mini International Neuropsychiatric Interview and Watson’s Post-Traumatic Stress Disorder Inventory).

Results

Multivariate logistic regression adjusted for age, education, trauma history, cancer, current psychiatric diagnoses, and psychoactive treatment indicated a negative association between current psychiatric disorder and high resilience compared to low resilience level (OR = 0.44, 95% CI [0.21–0.93]). This was related to anxiety and not mood disorder. A positive and independent association with a trauma history was also observed (OR = 3.18, 95% CI [1.44–7.01]).

Conclusion

Self-evaluation of resilience is influenced by both current anxiety disorder and trauma history. The independent positive association between resilience and trauma exposure may indicate a “vaccination” effect. This finding need to be taken into account in future studies evaluating resilience in general or clinical populations.

Cancer treatment and survivorship statistics, 2012

June 18, 2012 Comments off

Cancer treatment and survivorship statistics, 2012
Source: CA: A Cancer Journal for Clinicians

Although there has been considerable progress in reducing cancer incidence in the United States, the number of cancer survivors continues to increase due to the aging and growth of the population and improvements in survival rates. As a result, it is increasingly important to understand the unique medical and psychosocial needs of survivors and be aware of resources that can assist patients, caregivers, and health care providers in navigating the various phases of cancer survivorship. To highlight the challenges and opportunities to serve these survivors, the American Cancer Society and the National Cancer Institute estimated the prevalence of cancer survivors on January 1, 2012 and January 1, 2022, by cancer site. Data from Surveillance, Epidemiology, and End Results (SEER) registries were used to describe median age and stage at diagnosis and survival; data from the National Cancer Data Base and the SEER-Medicare Database were used to describe patterns of cancer treatment. An estimated 13.7 million Americans with a history of cancer were alive on January 1, 2012, and by January 1, 2022, that number will increase to nearly 18 million. The 3 most prevalent cancers among males are prostate (43%), colorectal (9%), and melanoma of the skin (7%), and those among females are breast (41%), uterine corpus (8%), and colorectal (8%). This article summarizes common cancer treatments, survival rates, and posttreatment concerns and introduces the new National Cancer Survivorship Resource Center, which has engaged more than 100 volunteer survivorship experts nationwide to develop tools for cancer survivors, caregivers, health care professionals, advocates, and policy makers. CA Cancer J Clin 2012. Published 2012 American Cancer Society.

See: New Report Estimates Nearly 18 Million Cancer Survivors in the US by 2022 (Science Daily)

Lung Cancer and Elemental Carbon Exposure in Trucking Industry Workers

June 4, 2012 Comments off

Lung Cancer and Elemental Carbon Exposure in Trucking Industry Workers
Source: Environmental Health Perspectives

Background: Diesel exhaust has been considered to be a probable lung carcinogen based on studies of occupationally exposed workers. Efforts to define lung cancer risk in these studies have been limited in part by lack of quantitative exposure estimates.

Objectives: We conducted a retrospective cohort study to assess lung cancer mortality risk in US trucking industry workers. Elemental carbon (EC) was used as a surrogate of exposure to engine exhaust from diesel vehicles, traffic, and loading dock operations.

Methods: Work records were available for 31,135 male workers employed in the unionized US trucking industry in 1985. A statistical model based on a national exposure assessment was used to estimate historical work-related exposures to EC. Lung cancer mortality was ascertained through 2000 and associations with cumulative and average EC were estimated using proportional hazards models.

Results: Duration of employment was inversely associated with lung cancer risk consistent with a healthy worker survivor effect and a cohort comprised of prevalent hires. Adjusting for employment duration, there was suggestion of a linear exposure-response relationship. For each 1000 µg/m3-months of cumulative EC, based on a 5-year exposure lag, the Hazard Ratio (HR) = 1.07 (95%CI: 0.99, 1.15) with a similar association for a 10-year exposure lag, HR=1.09 (95%CI: 0.99, 1.20). Average exposure was not associated with relative risk.

Conclusions: Lung cancer mortality in trucking industry workers increased in association with cumulative exposure to EC after adjustment for negative confounding by employment duration.

Global cancer transitions according to the Human Development Index (2008—2030): a population-based study

June 1, 2012 Comments off

Global cancer transitions according to the Human Development Index (2008—2030): a population-based study

Source: The Lancet

Background

Cancer is set to become a major cause of morbidity and mortality in the coming decades in every region of the world. We aimed to assess the changing patterns of cancer according to varying levels of human development.

Methods

We used four levels (low, medium, high, and very high) of the Human Development Index (HDI), a composite indicator of life expectancy, education, and gross domestic product per head, to highlight cancer-specific patterns in 2008 (on the basis of GLOBOCAN estimates) and trends 1988—2002 (on the basis of the series in Cancer Incidence in Five Continents), and to produce future burden scenario for 2030 according to projected demographic changes alone and trends-based changes for selected cancer sites.

Findings

In the highest HDI regions in 2008, cancers of the female breast, lung, colorectum, and prostate accounted for half the overall cancer burden, whereas in medium HDI regions, cancers of the oesophagus, stomach, and liver were also common, and together these seven cancers comprised 62% of the total cancer burden in medium to very high HDI areas. In low HDI regions, cervical cancer was more common than both breast cancer and liver cancer. Nine different cancers were the most commonly diagnosed in men across 184 countries, with cancers of the prostate, lung, and liver being the most common. Breast and cervical cancers were the most common in women. In medium HDI and high HDI settings, decreases in cervical and stomach cancer incidence seem to be offset by increases in the incidence of cancers of the female breast, prostate, and colorectum. If the cancer-specific and sex-specific trends estimated in this study continue, we predict an increase in the incidence of all-cancer cases from 12·7 million new cases in 2008 to 22·2 million by 2030.

Interpretation

Our findings suggest that rapid societal and economic transition in many countries means that any reductions in infection-related cancers are offset by an increasing number of new cases that are more associated with reproductive, dietary, and hormonal factors. Targeted interventions can lead to a decrease in the projected increases in cancer burden through effective primary prevention strategies, alongside the implementation of vaccination, early detection, and effective treatment programmes.

Free registration required to access full paper.

Nature and Impact of Grief Over Patient Loss on Oncologists’ Personal and Professional Lives

May 28, 2012 Comments off

Nature and Impact of Grief Over Patient Loss on Oncologists’ Personal and Professional Lives (PDF)
Source: Archives of Internal Medicine

Caring for critically ill and terminal patients can generate grief reactions in health care professionals (HCPs). While all HCPs can potentially experience grief over patient loss, oncologists face unique pressures because they are legally responsible for the patients’ care and may be blamed when patients die.5 Despite the evidence that grief over patient loss is an intrinsic part of clinical oncology, there are no qualitative studies examining the nature and extent of oncologists’ grief over patient loss nor the impact of this grief on oncologists’ lives. The objectives of our study were to explore and identify oncologists’ grief over patient loss and the ways in which this grief may affect their personal and professional lives.

BRCA1/2 carriers: their childbearing plans and theoretical intentions about having preimplantation genetic diagnosis and prenatal diagnosis

May 21, 2012 Comments off
Source:  Genetics in Medicine
Purpose:
To assess the impact of BRCA1/2 test results on carriers’ reproductive decision-making and the factors determining their theoretical intentions about preimplantation genetic diagnosis (PGD) and prenatal diagnosis (PND).
Methods:
Unaffected BRCA1/2 mutation carriers of childbearing age (N = 605; 449 women; 151 men) were included at least 1 year after the disclosure of their test results in a cross-sectional survey nested in a national cohort. Multivariate adjustment was performed on the data obtained in self-administered questionnaires.
Results:
Response rate was 81.0%. Overall, 32.5% and 50% said that they would undergo PGD/PND, respectively, at a theoretical next pregnancy, whereas only 12.1% found termination of pregnancy (TOP) acceptable. Theoretical intentions toward PGD did not depend on gender/age, but were higher among those with no future childbearing plans (adjusted odds ratio (AOR) 95% confidence interval (CI): 3.5 (1.9–6.4)) and those having fewer relatives with cancer (AOR 1.5 95% CI (1.0–2.3)). Greater TOP acceptability was observed among males and those with lower educational levels; 85.4% of respondents agreed that information about PGD/PND should be systematically delivered with the test results.
Conclusions:
The closer to reproductive decision-making BRCA1/2 carriers are, i.e., when they are more likely to be making future reproductive plans, the less frequently they intend to have PGD. Carriers’ theoretical intentions toward PND are discussed further.

Full Paper (PDF)

Sunburn and Sun Protective Behaviors Among Adults Aged 18–29 Years — United States, 2000–2010

May 18, 2012 Comments off

Sunburn and Sun Protective Behaviors Among Adults Aged 18–29 Years — United States, 2000–2010
Source: Morbidity and Mortality Weekly Report (CDC)

Skin cancer is an important public health concern. Nonmelanoma skin cancers, comprised mainly of basal cell carcinoma and squamous cell carcinoma, are the most common malignancies in the United States (1). Melanoma, although less common, is the deadliest form of skin cancer (2). Both melanoma and nonmelanoma skin cancers can be disfiguring, negatively affect quality of life, and create economic burden (2,3). Furthermore, age-adjusted incidence rates of both have increased in recent years (1,4). Different patterns of sun exposure are associated with different types of skin cancer. Continuous, chronic sun exposure, such as that observed among outdoor workers is associated with squamous cell carcinoma (3). Intermittent exposure, such as recreational exposure, is associated with melanoma and basal cell carcinoma (3,5–7). Sunburn typically occurs after intermittent exposure, and the risk for melanoma increases with an increasing number of sunburns during all periods of life (4–7). Sunburn is more common among persons aged 18–29 years compared with older adults (8). To evaluate trends in sunburn and sun protective behaviors among persons aged 18–29 years, CDC and the National Cancer Institute analyzed data from the 2000, 2003, 2005, 2008, and 2010 National Health Interview Survey (NHIS). The results indicated that although protective behaviors such as sunscreen use, shade use, and wearing long clothing to the ankles have increased in recent years, sunburn prevalence remains high, with 50.1% of all adults and 65.6% of whites aged 18–29 years reporting at least one sunburn in the past 12 months. These results suggest that additional efforts are needed to identify and implement effective strategies targeting younger adults to improve their sun protective behaviors and prevent sunburn and ultimately skin cancer.

Human Papillomavirus–Associated Cancers — United States, 2004–2008

April 23, 2012 Comments off

Human Papillomavirus–Associated Cancers — United States, 2004–2008
Source: Morbidity and Mortality Weekly Report (CDC)

Oncogenic human papillomavirus (HPV) has a causal role in nearly all cervical cancers and in many vulvar, vaginal, penile, anal, and oropharyngeal cancers (1). Most HPV infections clear within 1–2 years, but those that persist can progress to precancer or cancer. In the United States, public health prevention of cervical cancer includes both secondary prevention through cervical cancer screening and primary prevention through HPV vaccination. Transmission of HPV also can be reduced through condom use and limiting the number of sexual partners. Two vaccines (bivalent and quadrivalent) are available to protect against HPV types 16 and 18, which are responsible for 70% of cervical cancers. HPV 16 also is the most common HPV type found in the other five cancers often associated with HPV (2). To assess the incidence of HPV-associated cancers (i.e., cancers at specific anatomic sites and with specific cell types in which HPV DNA frequently is found), CDC analyzed 2004–2008 data from the National Program of Cancer Registries (NPCR) and the Surveillance, Epidemiology, and End Results (SEER) program. During 2004–2008, an average of 33,369 HPV-associated cancers were diagnosed annually (rate: 10.8 per 100,000 population), including 12,080 among males (8.1 per 100,000) and 21,290 among females (13.2). Multiplying the counts for HPV-associated cancers by percentages attributable to HPV (3), CDC estimated that approximately 26,000 new cancers attributable to HPV occurred each year, including 18,000 among females and 8,000 among males. Population-based cancer registries are important surveillance tools to measure the impact on cancer rates of public health interventions such as vaccination and screening.

Analysis of Cancer Risks in Populations near Nuclear Facilities: Phase 1 (2012)

April 4, 2012 Comments off

Analysis of Cancer Risks in Populations near Nuclear Facilities: Phase 1 (2012)

Source:  National Academy of Sciences
The question of whether there are cancer risks associated with living near a nuclear facility is of great interest to the public, especially those living closest to the facilities. Airborne and waterborne emissions of radioactive materials from the facilities’ normal operations (called effluents) can expose nearby populations to ionizing radiation, which could elevate the risk of cancer in the exposed populations. The first phase of a two-phase project, this report identifies scientific approaches for carrying out an assessment of cancer risks for populations near the 104 nuclear reactors and 13 fuel cycle facilities that the U.S. Nuclear Regulatory Commission licenses across the United States, as well as for people who have lived close to former sites.
Studies of health effects in populations (epidemiologic studies) could provide clues for a potential association between living near nuclear power plants and other nuclear facilities and risk of cancer. However, such studies are challenging because of incomplete data on occurrences of cancer and cancer deaths in geographic areas of interest (i.e., smaller than the county level), incomplete information on radioactive releases from nuclear facilities during early years of operation, and other factors. Moreover, because radioactive releases are generally low, any risks would be expected to be small and difficult to detect with statistical certainty. This report identifies two health study designs deemed suitable for assessing cancer risks in populations near nuclear facilities, having both scientific merit and the ability to address some public concerns. A pilot study would be needed to determine whether either or both of the two recommended study designs are feasible to implement on a large scale and to assess the required time and resources. Communicating with and involving the public and other stakeholders is an essential element in the study process.

Government Studies Inconclusive on Health Impact of Toxic Chemical Contaminants at Fort Detrick, Md.

April 1, 2012 Comments off

Government Studies Inconclusive on Health Impact of Toxic Chemical Contaminants at Fort Detrick, Md.
Source: National Research Council

Two government-issued studies are unable to demonstrate whether people were harmed by groundwater contaminated with toxic pollutants from Area B of Fort Detrick, Md., says a new report by the National Research Council. Furthermore, it is unlikely that additional studies could establish a link, because data on early exposures were not collected and cannot be obtained or reliably estimated now, the report notes.

The committee that wrote the report was charged with reviewing two studies: one conducted by the U.S. Agency for Toxic Substances and Disease Registry (ATSDR) and another by the Maryland Department of Health and Mental Hygiene and the Frederick County Health Department (MDHMH/FCHD). The committee was not asked to perform its own assessment of possible health effects of the contamination, exposures that might have occurred in Area A of Fort Detrick, potential exposures to Agent Orange, or risks from infectious diseases studied at the biocontainment laboratories. The ATSDR assessment examined whether a public health threat was posed by contaminated groundwater in Fort Detrick’s Area B, which was used to bury biological materials, test animals, radiologic tracer materials, and toxic chemicals including perchloroethylene (PCE) and trichloroethylene (TCE). The MDHMH/FCHD study reviewed cancer incidences in the communities surrounding Fort Detrick and whether the data indicated unusual patterns. The Maryland agencies did not collect or evaluate exposure information.

The Research Council committee found limitations that undermined the scientific soundness of ATSDR’s assessment, noting that groundwater measurements before 1992 were sparse. Without such data, it would be impossible to reconstruct residents’ past exposures with sufficient scientific certainty or determine when exposures began. ATSDR concluded that past exposure was “unlikely to have produced any harmful health effects, including cancer,” but the committee determined that the data were inadequate for ruling out health consequences from possible past exposures. Therefore, it said, a more appropriate conclusion would have been that the groundwater presented an “indeterminate public health hazard” — a category ATSDR uses when a judgment about the level of a hazard cannot be made because critical information is lacking.

The MDHMH/FCHD study found no evidence to suggest a cancer cluster in the communities surrounding Fort Detrick and that the rates of all cancers in those communities and in Frederick County were not different from those in Maryland as a whole. However, a higher incidence of lymphoma was found in the communities closest to Fort Detrick when compared with the expected incidence based on statewide data. These findings were scientifically sound and of high quality given the typical limitations of cancer surveillance data from state registries, the committee said. It noted that some follow-up steps could enhance the study and supported the Maryland agencies’ plans to conduct supplemental analyses of the data to better understand the finding regarding lymphoma.

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Report to the nation finds continuing declines in cancer death rates since the early 1990s; Feature highlights cancers associated with excess weight and lack of sufficient physical activity

March 29, 2012 Comments off

Report to the nation finds continuing declines in cancer death rates since the early 1990s; Feature highlights cancers associated with excess weight and lack of sufficient physical activity

Source: National Cancer Institute

Death rates from all cancers combined for men, women, and children continued to decline in the United States between 2004 and 2008, according to the Annual Report to the Nation on the Status of Cancer, 1975-2008. The overall rate of new cancer diagnoses, also known as incidence, among men decreased by an average of 0.6 percent per year between 2004 and 2008. Overall cancer incidence rates among women declined 0.5 percent per year from 1998 through 2006 with rates leveling off from 2006 through 2008.

The report is co-authored by researchers from the Centers for Disease Control and Prevention, the North American Association of Central Cancer Registries, the National Cancer Institute, and the American Cancer Society. It appeared early online on March 28, 2012, in the journal CANCER.

The special feature section highlights the effects of excess weight and lack of physical activity on cancer risk. Esophageal adenocarcinoma, cancers of the colon and rectum, kidney cancer, pancreatic cancer, endometrial cancer, and breast cancer among postmenopausal women are associated with being overweight or obese. Several of these cancers also are associated with not being sufficiently physically active.

Hypnotics’ association with mortality or cancer: a matched cohort study

March 23, 2012 Comments off
Source:  British Medical Journal
Objectives
An estimated 6%–10% of US adults took a hypnotic drug for poor sleep in 2010. This study extends previous reports associating hypnotics with excess mortality.
Setting
A large integrated health system in the USA.
Design
Longitudinal electronic medical records were extracted for a one-to-two matched cohort survival analysis.
Subjects
Subjects (mean age 54 years) were 10 529 patients who received hypnotic prescriptions and 23 676 matched controls with no hypnotic prescriptions, followed for an average of 2.5 years between January 2002 and January 2007.
Main outcome measures
Data were adjusted for age, gender, smoking, body mass index, ethnicity, marital status, alcohol use and prior cancer. Hazard ratios (HRs) for death were computed from Cox proportional hazards models controlled for risk factors and using up to 116 strata, which exactly matched cases and controls by 12 classes of comorbidity.
Results
As predicted, patients prescribed any hypnotic had substantially elevated hazards of dying compared to those prescribed no hypnotics. For groups prescribed 0.4–18, 18–132 and >132 doses/year, HRs (95% CIs) were 3.60 (2.92 to 4.44), 4.43 (3.67 to 5.36) and 5.32 (4.50 to 6.30), respectively, demonstrating a dose–response association. HRs were elevated in separate analyses for several common hypnotics, including zolpidem, temazepam, eszopiclone, zaleplon, other benzodiazepines, barbiturates and sedative antihistamines. Hypnotic use in the upper third was associated with a significant elevation of incident cancer; HR=1.35 (95% CI 1.18 to 1.55). Results were robust within groups suffering each comorbidity, indicating that the death and cancer hazards associated with hypnotic drugs were not attributable to pre-existing disease.
Conclusions
Receiving hypnotic prescriptions was associated with greater than threefold increased hazards of death even when prescribed <18 pills/year. This association held in separate analyses for several commonly used hypnotics and for newer shorter-acting drugs. Control of selective prescription of hypnotics for patients in poor health did not explain the observed excess mortality.

See: Obesity raises death risk tied to sleeping pills (EurekAlert!)

Red Meat Consumption and Mortality

March 13, 2012 Comments off

Red Meat Consumption and Mortality
Source: Archives of Internal Medicine

Background
Red meat consumption has been associated with an increased risk of chronic diseases. However, its relationship with mortality remains uncertain.

Methods
We prospectively observed 37 698 men from the Health Professionals Follow-up Study (1986-2008) and 83 644 women from the Nurses’ Health Study (1980-2008) who were free of cardiovascular disease (CVD) and cancer at baseline. Diet was assessed by validated food frequency questionnaires and updated every 4 years.

Results
We documented 23 926 deaths (including 5910 CVD and 9464 cancer deaths) during 2.96 million person-years of follow-up. After multivariate adjustment for major lifestyle and dietary risk factors, the pooled hazard ratio (HR) (95% CI) of total mortality for a 1-serving-per-day increase was 1.13 (1.07-1.20) for unprocessed red meat and 1.20 (1.15-1.24) for processed red meat. The corresponding HRs (95% CIs) were 1.18 (1.13-1.23) and 1.21 (1.13-1.31) for CVD mortality and 1.10 (1.06-1.14) and 1.16 (1.09-1.23) for cancer mortality. We estimated that substitutions of 1 serving per day of other foods (including fish, poultry, nuts, legumes, low-fat dairy, and whole grains) for 1 serving per day of red meat were associated with a 7% to 19% lower mortality risk. We also estimated that 9.3% of deaths in men and 7.6% in women in these cohorts could be prevented at the end of follow-up if all the individuals consumed fewer than 0.5 servings per day (approximately 42 g/d) of red meat.

Conclusions
Red meat consumption is associated with an increased risk of total, CVD, and cancer mortality. Substitution of other healthy protein sources for red meat is associated with a lower mortality risk.

Hypnotics’ association with mortality or cancer: a matched cohort study

March 1, 2012 Comments off
Source:  British Medical Journal
Objectives
An estimated 6%–10% of US adults took a hypnotic drug for poor sleep in 2010. This study extends previous reports associating hypnotics with excess mortality.
Setting
A large integrated health system in the USA.
Design
Longitudinal electronic medical records were extracted for a one-to-two matched cohort survival analysis.
Subjects
Subjects (mean age 54 years) were 10 529 patients who received hypnotic prescriptions and 23 676 matched controls with no hypnotic prescriptions, followed for an average of 2.5 years between January 2002 and January 2007.
Main outcome measures
Data were adjusted for age, gender, smoking, body mass index, ethnicity, marital status, alcohol use and prior cancer. Hazard ratios (HRs) for death were computed from Cox proportional hazards models controlled for risk factors and using up to 116 strata, which exactly matched cases and controls by 12 classes of comorbidity.
Results
As predicted, patients prescribed any hypnotic had substantially elevated hazards of dying compared to those prescribed no hypnotics. For groups prescribed 0.4–18, 18–132 and >132 doses/year, HRs (95% CIs) were 3.60 (2.92 to 4.44), 4.43 (3.67 to 5.36) and 5.32 (4.50 to 6.30), respectively, demonstrating a dose–response association. HRs were elevated in separate analyses for several common hypnotics, including zolpidem, temazepam, eszopiclone, zaleplon, other benzodiazepines, barbiturates and sedative antihistamines. Hypnotic use in the upper third was associated with a significant elevation of incident cancer; HR=1.35 (95% CI 1.18 to 1.55). Results were robust within groups suffering each comorbidity, indicating that the death and cancer hazards associated with hypnotic drugs were not attributable to pre-existing disease.
Conclusions
Receiving hypnotic prescriptions was associated with greater than threefold increased hazards of death even when prescribed <18 pills/year. This association held in separate analyses for several commonly used hypnotics and for newer shorter-acting drugs. Control of selective prescription of hypnotics for patients in poor health did not explain the observed excess mortality.

Full Paper (PDF)

EPA Finalizes Air Toxic Emissions Standards for Polyvinyl Chloride (PVC) Production Facilities/Standards will cut harmful emissions that impact local communities

February 17, 2012 Comments off

EPA Finalizes Air Toxic Emissions Standards for Polyvinyl Chloride (PVC) Production Facilities/Standards will cut harmful emissions that impact local communities
Source: U.S. Environmental Protection Agency

The U.S. Environmental Protection Agency (EPA) today issued strong final standards requiring facilities that produce polyvinyl chloride and copolymers (PVC) to reduce harmful air emissions, which will improve air quality and protect people’s health in communities where facilities are located. Exposure to toxic air pollutants, like those emitted from PVC facilities, can cause respiratory problems and other serious health issues, and can increase the risk of developing cancer. In particular, children are known to be more sensitive to the cancer risks posed by inhaling vinyl chloride, one of the known carcinogens emitted from PVC facilities.

The final standards are based on currently available technologies and will reduce emissions of air toxics, such as dioxin and vinyl chloride. Facilities will have the flexibility to choose the most practical and cost-effective control technology or technique to reduce the emissions. Facilities will be required to monitor emissions at certain points in the PVC production process to ensure that the standards are met.

Currently, there are 17 PVC production facilities throughout the United States, with a majority of these facilities located in Louisiana and Texas. All existing and any new PVC production facilities are covered by the final rule.

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Fetal Radiation Exposure Induces Testicular Cancer in Genetically Susceptible Mice

February 17, 2012 Comments off

Fetal Radiation Exposure Induces Testicular Cancer in Genetically Susceptible Mice
Source: PLoS ONE
From press release (MD Anderson Cancer Center):

Male fetuses of mothers that are exposed to radiation during early pregnancy may have an increased chance of developing testicular cancer, according to a study in mice at The University of Texas MD Anderson Cancer Center. The article was published today in PLoS ONE.

The study is the first to find an environmental cause for testicular germ cell tumors, the most common cancer in young Caucasian men.

“This discovery launches a major shift in the current research model, placing DNA-damaging agents in the forefront as likely mediators of testicular cancer induction,” said corresponding author Gunapala Shetty, Ph.D., assistant professor in MD Anderson’s Department of Experimental Radiation Oncology.

Non-communicable Diseases will Cost Global Economy $47 Trillion by 2030

February 6, 2012 Comments off

Non-communicable Diseases will Cost Global Economy $47 Trillion by 2030
Source: Chatham House

Non-communicable diseases (NCDs) are the greatest cause of deaths and disability for humans and have a serious economic impact, says a new Chatham House paper, Silent Killer, Economic Opportunity: Rethinking Non-Communicable Disease. The cumulative losses in global economic output due to NCDs will total $47 trillion, or 5% of GDP, by 2030. The author, Sudeep Chand, says modest investments to prevent and treat NCDs could bring major economic returns and save tens of millions of lives.

NCDs, such as heart disease, cancer, asthma and depression, have their place alongside economic risks such as infectious diseases, illicit trade, migration, terrorism and food security. They have global scope, cross-industry relevance and a high economic and social impact. Economic policy-makers and businesses concerned with capital and labour costs have good reasons to consider the burdens from NCDs. Sustainable, balanced economic policy can consider low rates of NCDs as a measure of success. Where the economic benefits outweigh the costs, civil society has a major role to play in harnessing an effective response to NCDs.

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