Cell Phone Radiation Exposure Limits and Engineering Solutions.

In the 1990s, the Institute of Electrical and Electronics Engineers (IEEE) restricted its risk assessment for human exposure to radiofrequency radiation (RFR) in seven ways: (1) Inappropriate focus on heat, ignoring sub-thermal effects. (2) Reliance on exposure experiments performed over very short times. (3) Overlooking time/amplitude characteristics of RFR signals. (4) Ignoring carcinogenicity, hypersensitivity, and other health conditions connected with RFR. (5) Measuring cellphone Specific Absorption Rates (SAR) at arbitrary distances from the head. (6) Averaging SAR doses at volumetric/mass scales irrelevant to health. (7) Using unrealistic simulations for cell phone SAR estimations. Low-cost software and hardware modifications are proposed here for cellular phone RFR exposure mitigation: (1) inhibiting RFR emissions in contact with the body, (2) use of antenna patterns reducing the Percent of Power absorbed in the Head (PPHead) and body and increasing the Percent of Power Radiated for communications (PPR), and (3) automated protocol-based reductions of the number of RFR emissions, their duration, or integrated dose. These inexpensive measures do not fundamentally alter cell phone functions or communications quality. A health threat is scientifically documented at many levels and acknowledged by industries. Yet mitigation of RFR exposures to users does not appear as a priority with most cell phone manufacturers.

A critical analysis of the MOBI-Kids study of wireless phone use in childhood and adolescence and brain tumor risk.

The MOBI-Kids case-control study on wireless phone use and brain tumor risk in childhood and adolescence included the age group 10-24 years diagnosed between 2010 and 2015. Overall no increased risk was found although for brain tumors in the temporal region an increased risk was found in the age groups 10-14 and 20-24 years. Most odds ratios (ORs) in MOBI-Kids were <1.0, some statistically significant, suggestive of a preventive effect from RF radiation; however, this is in contrast to current knowledge about radiofrequency (RF) carcinogenesis. The MOBI-Kids results are not biologically plausible and indicate that the study was flawed due to methodological problems. For example, not all brain tumor cases were included since central localization was excluded. Instead, all brain tumor cases should have been included regardless of histopathology and anatomical localization. Only surgical controls with appendicitis were used instead of population-based controls from the same geographical area as for the cases. In fact, increased incidence of appendicitis has been postulated to be associated with RF radiation which makes selection of control group in MOBI-Kids questionable. Start of wireless phone use up to 10 years before diagnosis was in some analyses included in the unexposed group. Thus, any important results demonstrating late carcinogenesis, a promoter effect, have been omitted from analysis and may underestimate true risks. Linear trend was in some analyses statistically significant in the calculation of RF-specific energy and extremely low frequency (ELF)-induced current in the center of gravity of the tumor. Additional case-case analysis should have been performed. The data from this study should be reanalyzed using unconditional regression analysis adjusted for potential confounding factors to increase statistical power. Then all responding cases and controls could be included in the analyses. In sum, we believe the results as reported in this paper seem uninterpretable and should be dismissed.

The Critical Importance of Molecular Biomarkers and Imaging in the Study of Electrohypersensitivity. A Scientific Consensus International Report.

Clinical research aiming at objectively identifying and characterizing diseases via clinical observations and biological and radiological findings is a critical initial research step when establishing objective diagnostic criteria and treatments. Failure to first define such diagnostic criteria may lead research on pathogenesis and etiology to serious confounding biases and erroneous medical interpretations. This is particularly the case for electrohypersensitivity (EHS) and more particularly for the so-called "provocation tests", which do not investigate the causal origin of EHS but rather the EHS-associated particular environmental intolerance state with hypersensitivity to man-made electromagnetic fields (EMF). However, because those tests depend on multiple EMF-associated physical and biological parameters and have been conducted in patients without having first defined EHS objectively and/or endpoints adequately, they cannot presently be considered to be valid pathogenesis research methodologies. Consequently, the negative results obtained by these tests do not preclude a role of EMF exposure as a symptomatic trigger in EHS patients. Moreover, there is no proof that EHS symptoms or EHS itself are caused by psychosomatic or nocebo effects. This international consensus report pleads for the acknowledgement of EHS as a distinct neuropathological disorder and for its inclusion in the WHO International Classification of Diseases.

Reply to Brzozek et al. Comment on "Choi et al. Cellular Phone Use and Risk of Tumors: Systematic Review and Meta-Analysis. Int. J. Environ. Res. Public Health 2020, 17, 8079".

We appreciate Christopher Brzozek and his colleagues' interest [...].

Reply to Comment on Choi, Y.-J., et al. Cellular Phone Use and Risk of Tumors: Systematic Review and Meta-Analysis. Int. J. Environ. Res. Public Health 2020, 17, 8079.

We appreciate Frank de Vocht and Martin Röösli's interest [...].

Cellular Phone Use and Risk of Tumors: Systematic Review and Meta-Analysis.

We investigated whether cellular phone use was associated with increased risk of tumors using a meta-analysis of case-control studies. PubMed and EMBASE were searched from inception to July 2018. The primary outcome was the risk of tumors by cellular phone use, which was measured by pooling each odds ratio (OR) and its 95% confidence interval (CI). In a meta-analysis of 46 case-control studies, compared with never or rarely having used a cellular phone, regular use was not associated with tumor risk in the random-effects meta-analysis. However, in the subgroup meta-analysis by research group, there was a statistically significant positive association (harmful effect) in the Hardell et al. studies (OR, 1.15-95% CI, 1.00 to 1.33- n = 10), a statistically significant negative association (beneficial effect) in the INTERPHONE-related studies (case-control studies from 13 countries coordinated by the International Agency for Research on Cancer (IARC); (OR, 0.81-95% CI, 0.75 to 0.89-n = 9), and no statistically significant association in other research groups' studies. Further, cellular phone use with cumulative call time more than 1000 h statistically significantly increased the risk of tumors. This comprehensive meta-analysis of case-control studies found evidence that linked cellular phone use to increased tumor risk.

Comparison of radiofrequency electromagnetic field exposure levels in different everyday microenvironments in an international context.

BACKGROUND: The aim of this study was to quantify RF-EMF exposure applying a tested protocol of RF-EMF exposure measurements using portable devices with a high sampling rate in different microenvironments of Switzerland, Ethiopia, Nepal, South Africa, Australia and the United States of America. METHOD: We used portable measurement devices for assessing RF-EMF exposure in 94 outdoor microenvironments and 18 public transport vehicles. The measurements were taken either by walking with a backpack with the devices at the height of the head and a distance of 20-30 cm from the body, or driving a car with the devices mounted on its roof, which was 170-180 cm above the ground. The measurements were taken for about 30 min while walking and about 15-20 min while driving in each microenvironment, with a sampling rate of once every 4 s (ExpoM-RF) and 5 s (EME Spy 201). RESULTS: Mean total RF-EMF exposure in various outdoor microenvironments varied between 0.23 V/m (non-central residential area in Switzerland) and 1.85 V/m (university area in Australia), and across modes of public transport between 0.32 V/m (bus in rural area in Switzerland) and 0.86 V/m (Auto rickshaw in urban area in Nepal). For most outdoor areas the major exposure contribution was from mobile phone base stations. Otherwise broadcasting was dominant. Uplink from mobile phone handsets was generally very small, except in Swiss trains and some Swiss buses. CONCLUSIONS: This study demonstrates high RF-EMF variability between the 94 selected microenvironments from all over the world. Exposure levels tended to increase with increasing urbanity. In most microenvironments downlink from mobile phone base stations is the most relevant contributor.

Online smoking cessation program for Korean Americans: Randomized trial to test effects of incentives for program completion and interim surveys.

INTRODUCTION: Smoking is prevalent among Korean American men. Quitting is Winning, an Internet-based, cognitive-behavioral smoking cessation program, was developed using community-based participatory research principles. METHODS: A randomized controlled trial was used to evaluate whether participants were more likely to complete the program and quit smoking at 6-months of follow-up with additional reinforcement. The main outcomes were the proportion of participants who completed the online program and the proportion who quit smoking for at least 30days, 26weeks after enrollment, among those randomized into the high-reinforcement (HR) condition compared with those in the low-reinforcement (LR) condition. RESULTS: The study achieved a final enrollment of 403 participants including 56 women. Program completion was greater for the HR as compared to the LR condition (17% vs. 10%, p=.035). There was no significant difference in 30-day smoking cessation (intent-to-treat [ITT]) between the HR and LR conditions (9% vs. 8%, ns). Smoking cessation was greater among program completers as compared to those who did not complete the program (28% vs. 5%, p<.001). CONCLUSIONS: The addition of interim surveys and financial incentives for interim survey completion and program completion significantly increased the likelihood of program completion. Moreover, program completers were significantly more likely to quit smoking. Although smoking cessation rates did not significantly differ between the HR and LR conditions, the results suggest that future studies should explore the efficacy of larger financial incentives for program completion (Clinical Trial #NCT02584127).

Adoption of an outdoor residential Hall smoking policy in a California public university: a case study.

OBJECTIVE: Because secondhand smoke is a public health concern, many colleges have adopted bans to ensure healthier environments. This study demonstrates how outdoor smoking policy change can be accomplished at a large public university. PARTICIPANTS: The participants were 1,537 students housed in residential communities at the University of California, Berkeley, who completed an online survey. METHODS: A proposal for smoke-free residential communities that included student resident survey data was prepared. RESULTS: The survey data indicated that most students (77%) were bothered by secondhand smoke, and most (66%) favored smoke-free environments. The data were used to advocate for a change in the residential community smoking policy. CONCLUSION: The survey data and institutional comparisons played a key role in administrators' decision-making about campus smoking policy. Despite administrators' concerns about students' safety and freedom of choice, student-led advocacy was able to influence policy change.

An internet-based smoking cessation program for Korean Americans: results from a randomized controlled trial.

INTRODUCTION: Smoking is quite prevalent among Korean Americans (KAs). Quitting is Winning was developed using community-based participatory research principles as an online self-help smoking cessation program for KAs in response to feedback from our community partner who felt that most KAs prefer to quit "on their own." METHODS: A randomized controlled trial was used to evaluate this cognitive-behavioral program. The main outcome was the proportion of participants who had quit for at least 30 days, 50 weeks after enrollment, among those randomized into the Internet intervention compared with those receiving a similar program via booklet. The study had 11 online surveys administered every 5 weeks. RESULTS: The study took place between September 2005 and April 2009 and had a final enrollment of 1,112. Based on the outcome assessed at 50 weeks, there was no significant difference in 30-day smoking cessation between the Internet (11%) and booklet (13%) groups (intent-to-treat [ITT] difference = -2%, 95% CI = -6% to 2%). In post-hoc analysis, quitting was higher among participants in the Internet intervention (n = 562) who completed the online program: 26% quit compared with 10% who did not complete the program (ITT difference = 16%, 95% CI = 3%-29%). CONCLUSIONS: The Internet self-help smoking cessation program appears to help KA smokers quit, although not more than a similar program delivered via booklet. If we can get people engaged, online cessation programs have potential to reach smokers who would not or cannot participate in more traditional interventions.

Relationships between household smoking restrictions and intention to quit smoking among Korean American male smokers in California.

This cross-sectional study examined the relationships between household smoking restrictions and intentions to quit smoking among Korean American male smokers in California. We used data from the California Korean American Tobacco Use Survey (CKATUS), which was conducted in 2004 using computer-assisted telephone interviewing. Among the 2,545 respondents who participated in the CKATUS, the 387 male smokers who answered a question assessing their intention to quit smoking were included in the final analyses. In univariable analyses, smokers who reported having household smoking restrictions were more likely to intend to quit smoking as compared with those who did not (P<0.01). Other independent correlates of having an intention to quit smoking were being less than 50 yr of age, having spent more than 50% of one's life in the US, being assimilated, and having other smokers in the household. In a multiple logistic regression analysis, the significant correlates of having an intention to quit smoking were household smoking restrictions (complete or partial restriction vs. no restriction on smoking; odds ratio, 2.54; 95% confidence interval, 1.22-5.28) and absence of other smokers in the household. In conclusion, smoking restrictions in the household are associated with an intention to quit smoking among Korean American male smokers in California.

Mobile phone use and risk of tumors: a meta-analysis.

PURPOSE: Case-control studies have reported inconsistent findings regarding the association between mobile phone use and tumor risk. We investigated these associations using a meta-analysis. METHODS: We searched MEDLINE (PubMed), EMBASE, and the Cochrane Library in August 2008. Two evaluators independently reviewed and selected articles based on predetermined selection criteria. RESULTS: Of 465 articles meeting our initial criteria, 23 case-control studies, which involved 37,916 participants (12,344 patient cases and 25,572 controls), were included in the final analyses. Compared with never or rarely having used a mobile phone, the odds ratio for overall use was 0.98 for malignant and benign tumors (95% CI, 0.89 to 1.07) in a random-effects meta-analysis of all 23 studies. However, a significant positive association (harmful effect) was observed in a random-effects meta-analysis of eight studies using blinding, whereas a significant negative association (protective effect) was observed in a fixed-effects meta-analysis of 15 studies not using blinding. Mobile phone use of 10 years or longer was associated with a risk of tumors in 13 studies reporting this association (odds ratio = 1.18; 95% CI, 1.04 to 1.34). Further, these findings were also observed in the subgroup analyses by methodologic quality of study. Blinding and methodologic quality of study were strongly associated with the research group. CONCLUSION: The current study found that there is possible evidence linking mobile phone use to an increased risk of tumors from a meta-analysis of low-biased case-control studies. Prospective cohort studies providing a higher level of evidence are needed.

Effects of Web- and computer-based smoking cessation programs: meta-analysis of randomized controlled trials.

BACKGROUND: The effects of Web- and computer-based smoking cessation programs are inconsistent in randomized controlled trials (RCTs). We evaluated those effects using a meta-analysis. METHODS: We searched MEDLINE (PubMed), EMBASE, and the Cochrane Review in August 2008. Two evaluators independently selected and reviewed eligible studies. RESULTS: Of 287 articles searched, 22 RCTs, which included 29 549 participants with 16 050 enrolled in Web- or computer-based smoking cessation program groups and 13 499 enrolled in control groups, were included in the final analyses. In a random-effects meta-analysis of all 22 trials, the intervention group had a significant effect on smoking cessation (relative risk [RR], 1.44; 95% confidence interval [CI], 1.27-1.64). Similar findings were observed in 9 trials using a Web-based intervention (RR, 1.40; 95% CI, 1.13-1.72) and in 13 trials using a computer-based intervention (RR, 1.48; 95% CI, 1.25-1.76). Subgroup analyses revealed similar findings for different levels of methodological rigor, stand-alone vs supplemental interventions, type of abstinence rates employed, and duration of follow-up period, but not for adolescent populations (RR, 1.08; 95% CI, 0.59-1.98). CONCLUSION: The meta-analysis of RCTs indicates that there is sufficient clinical evidence to support the use of Web- and computer-based smoking cessation programs for adult smokers.

Adherence to Pap test guidelines: variation among Asians in California.

OBJECTIVES: To compare Pap screening in the previous 3 years among subgroups of Asian American women, aged 18 to 65 years. DESIGN: Analysis of data from the 2001 and 2003 California Health Interview Survey (CHIS), a cross-sectional population-based telephone survey. MAIN MEASURES: The survey elicited information from major Asian subgroups, including Chinese, Filipina, Japanese, Korean, South Asian, and Vietnamese. Surveys were administered in several languages, including Mandarin, Cantonese, Korean, and Vietnamese. Employing the Andersen behavioral model of health services utilization, this study fits logistic regression models to identify correlates of Pap screening within and across Asian American subgroups. These analyses use time living in the United States and English proficiency as acculturation measures. RESULTS: There were different independent correlates of Pap test receipt for the six Asian subgroups. English proficiency and income were independently associated with Pap screening among only one subgroup; education, time in the US, and insurance among three; and age and usual source of care among four subgroups. Unmarried women were more likely to report not having a Pap test in the past three years across all six subgroups. CONCLUSIONS: Based on these differences, programs and policies targeting the health of Asian American women should consider tailoring interventions to match the needs of different ethnic groups. Specifically, program materials should strive to be both culturally sensitive and linguistically appropriate for all target populations.

Cancer coverage in a mainstream and Korean American online newspaper: lessons for community intervention.

OBJECTIVE: Korean Americans have higher incidence of stomach, liver, and cervical cancer than most groups in CA, USA, and generally lower rates of cancer screening. To better target community interventions, we evaluated the cancer content in a leading Korean American newspaper, the Korea Daily, compared to a mainstream newspaper from the same metropolitan area, the Los Angeles (LA) Times. METHODS: Using the online versions of each newspaper for the year 2006, we counted articles mentioning cancer and evaluated the content in a random sample of 300 articles from each newspaper. Articles were categorized by relevance of cancer content and topic(s) covered. RESULTS: Although the LA Times had a higher proportion of articles mentioning cancer, the Korea Daily had more articles that primarily focused on cancer and addressed specific types of cancer. Articles in the Korea Daily were more likely to discuss prevention, while those in the LA Times more often focused on people, politics, or research. CONCLUSIONS: Smaller, ethnic newspapers may be more amenable to messages about prevention and appropriate places to target community-focused interventions. PRACTICE IMPLICATIONS: Health practitioners should consider submitting articles to ethnic newspapers and forming partnerships with journalists to cultivate this potential.

"Health is strength": a community health education program to improve breast and cervical cancer screening among Korean American Women in Alameda County, California.

BACKGROUND: A 48-month community intervention was conducted to improve breast and cervical cancer (BCC) screening among Korean American (KA) women in Alameda County (AL), California. KA women in Santa Clara (SC) County, California served as a comparison group. METHODS: Random samples of KA women from each county were surveyed by telephone in 1994 (n=818) and 2002 (n=1084). Propensity score analyses were used to estimate the difference between counties in changes over time in screening (Pap tests, breast self-examinations, clinical breast examinations, and mammography), and to estimate differences in screening between participants and non-participants in an educational workshop among women in AL in 2002. RESULTS: Mammography screening and clinical breast examinations increased over time in both counties. Pap tests increased in AL but not SC, and breast self-examinations did not change significantly in either county. None of the intervention-comparison group differences over time were significant. In 2002, compared to non-participants, women who attended a workshop were more likely to report a recent Pap test (P<.08). CONCLUSIONS: Although our overall intervention did not appear to enhance screening practices at the community-level, attendance at a women's health workshop appears to have increased cervical cancer screening.

Effect of provider status on preventive screening among Korean-American women in Alameda County, California.

BACKGROUND: Previous research suggests that having a doctor of the same ethnicity may be associated with lower rates of breast and cervical cancer screening in some Asian-American women. This study analyzes the effect of having a Korean, non-Korean, or no regular doctor upon several measures of screening among Korean-American women. METHODS: A random sample of 339 Korean-American women in Alameda County, California, were surveyed by telephone. Contingency tables and multivariable logistic regression were used to evaluate the association between provider status and six measures of recent screening, controlling for insurance and demographics. RESULTS: Having a non-Korean doctor was associated with an increased likelihood of having a Pap smear (odds ratio = 2.19, 95% confidence interval = 1.00, 4.80), mammogram (odds ratio = 7.63, 95% confidence interval = 2.35, 24.84), and clinical breast examination (odds ratio = 3.76, 95% confidence interval = 1.54, 9.20) in the past 2 years, compared to having a Korean doctor. This relationship is less apparent for nonfemale specific screening tests like cholesterol exams and routine checkups. CONCLUSIONS: Women who have a Korean doctor have less than optimal rates of breast and cervical cancer screening compared to women who have a non-Korean doctor. Having a Korean doctor may indicate less access to preventive health services, and programs to increase screening should target both Korean physicians and their female patients.