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PMID: 

BMC Public Health. 2011 Jan 31 ;11:66. Epub 2011 Jan 31. PMID: 21281471

Abstract Title: 

Mobile phone use and stress, sleep disturbances, and symptoms of depression among young adults–a prospective cohort study.

Abstract: 

BACKGROUND: Because of the quick development and widespread use of mobile phones, and their vast effect on communication and interactions, it is important to study possible negative health effects of mobile phone exposure. The overall aim of this study was to investigate whether there are associations between psychosocial aspects of mobile phone use and mental health symptoms in a prospective cohort of young adults.
METHODS: The study group consisted of young adults 20-24 years old (n = 4156), who responded to a questionnaire at baseline and 1-year follow-up. Mobile phone exposure variables included frequency of use, but also more qualitative variables: demands on availability, perceived stressfulness of accessibility, being awakened at night by the mobile phone, and personal overuse of the mobile phone. Mental health outcomes included current stress, sleep disorders, and symptoms of depression. Prevalence ratios (PRs) were calculated for cross-sectional and prospective associations between exposure variables and mental health outcomes for men and women separately.
RESULTS: There were cross-sectional associations between high compared to low mobile phone use and stress, sleep disturbances, and symptoms of depression for the men and women. When excluding respondents reporting mental health symptoms at baseline, high mobile phone use was associated with sleep disturbances and symptoms of depression for the men and symptoms of depression for the women at 1-year follow-up. All qualitative variables had cross-sectional associations with mental health outcomes. In prospective analysis, overuse was associated with stress and sleep disturbances for women, and high accessibility stress was associated with stress, sleep disturbances, and symptoms of depression for both men and women.
CONCLUSIONS: High frequency of mobile phone use at baseline was a risk factor for mental health outcomes at 1-year follow-up among the young adults. The risk for reporting mental health symptoms at follow-up was greatest among those who had perceived accessibility via mobile phones to be stressful. Public health prevention strategies focusing on attitudes could include information and advice, helping young adults to set limits for their own and others' accessibility.

PMID: 

Environ Health. 2008 Nov 4 ;7:54. Epub 2008 Nov 4. PMID: 18983641

Abstract Title: 

Exposure to mobile telecommunication networks assessed using personal dosimetry and well-being in children and adolescents: the German MobilEe-study.

Abstract: 

BACKGROUND: Despite the increase of mobile phone use in the last decade and the growing concern whether mobile telecommunication networks adversely affect health and well-being, only few studies have been published that focussed on children and adolescents. Especially children and adolescents are important in the discussion of adverse health effects because of their possibly higher vulnerability to radio frequency electromagnetic fields.METHODS: We investigated a possible association between exposure to mobile telecommunication networks and well-being in children and adolescents using personal dosimetry. A population-based sample of 1.498 children and 1.524 adolescents was assembled for the study (response 52%). Participants were randomly selected from the population registries of four Bavarian (South of Germany) cities and towns with different population sizes. During a Computer Assisted Personal Interview data on participants' well-being, socio-demographic characteristics and potential confounder were collected. Acute symptoms were assessed three times during the study day (morning, noon, evening).Using a dosimeter (ESM-140 Maschek Electronics), we obtained an exposure profile over 24 hours for three mobile phone frequency ranges (measurement interval 1 second, limit of determination 0.05 V/m) for each of the participants. Exposure levels over waking hours were summed up and expressed as mean percentage of the ICNIRP (International Commission on Non-Ionizing Radiation Protection) reference level.RESULTS: In comparison to non-participants, parents and adolescents with a higher level of education who possessed a mobile phone and were interested in the topic of possible adverse health effects caused by mobile telecommunication network frequencies were more willing to participate in the study. The median exposure to radio frequency electromagnetic fields of children and adolescents was 0.18% and 0.19% of the ICNIRP reference level respectively.CONCLUSION: In comparison to previous studies this is one of the first to assess the individual level of exposure to mobile telecommunication networks using personal dosimetry, enabling objective assessment of exposure from all sources and longer measurement periods. In total, personal dosimetry was proofed to be a well accepted tool to study exposure to mobile phone frequencies in epidemiologic studies including health effects on children and adolescents.

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PMID: 

Toxicol Sci. 2019 Aug 6. Epub 2019 Aug 6. PMID: 31388676

Abstract Title: 

The customizable e-cigarette resistance influences toxicological outcomes: lung degeneration, inflammation and oxidative stress-induced in a rat model.

Abstract: 

Despite the knowledge gap regarding the risk-benefit ratio of the electronic cigarette (e-cig), its use has grown exponentially, even in teenagers. E-cig vapour contains carcinogenic compounds (e.g., formaldehyde, acetaldehyde and acrolein) and free radicals, especially reactive oxygen species (ROS) that cause toxicological effects, including DNA damage. The role of e-cig voltage customization on molecule generation has been reported, but the effects of the resistance on e-cig emissions and toxicity are unknown. Here we show that the manipulation of e-cig resistance influences the carbonyls production from non-nicotine vapour and the oxidative and inflammatory status in a rat model. Fixing the voltage at the conventional 3.5 V, we observed that the amount of the selected aldehydes increased as the resistance decreased from 1.5 to 0.25Ω. Under these conditions, we exposed Sprague Dawley rats to e-cig aerosol for 28-days, and we studied the pulmonary inflammation, oxidative stress, tissue damage and blood homeostasis. We found a perturbation of the antioxidant and phase-II enzymes, probably related to the increased ROS levels dueto the enhanced xanthine oxidase and P450-linked monooxygenases. Furthermore, frames from scanning electron microscope showed a disorganization of alveolar and bronchial epithelium in 0.25 Ω group. Overall, various toxicological outcomes, widely recognized as smoke-related injuries, can potentially occur in e-cig consumers who use low-voltage and resistance device. Our study suggests that certain"tips for vaping safety"cannot be established, and encourages further independent investigations to help public health agencies in regulating the e-cig use.

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PMID: 

Eur J Epidemiol. 2010 Feb ;25(2):135-41. Epub 2009 Dec 4. PMID: 19960235

Abstract Title: 

Exposure to radio-frequency electromagnetic fields and behavioural problems in Bavarian children and adolescents.

Abstract: 

Only few studies have so far investigated possible health effects of radio-frequency electromagnetic fields (RF EMF) in children and adolescents, although experts discuss a potential higher vulnerability to such fields. We aimed to investigate a possible association between measured exposure to RF EMF fields and behavioural problems in children and adolescents. 1,498 children and 1,524 adolescents were randomly selected from the population registries of four Bavarian (South of Germany) cities. During an Interview data on participants' mental health, socio-demographic characteristics and potential confounders were collected. Mental health behaviour was assessed using the German version of the Strengths and Difficulties Questionnaire (SDQ). Using a personal dosimeter, we obtained radio-frequency EMF exposure profiles over 24 h. Exposure levels over waking hours were expressed as mean percentage of the reference level. Overall, exposure to radiofrequency electromagnetic fields was far below the reference level. Seven percent of the children and 5% of the adolescents showed an abnormal mental behaviour. In the multiple logistic regression analyses measured exposure to RF fields in the highest quartile was associated to overall behavioural problems for adolescents (OR 2.2; 95% CI 1.1-4.5) but not for children (1.3; 0.7-2.6). These results are mainly driven by one subscale, as the results showed an association between exposure and conduct problems for adolescents (3.7; 1.6-8.4) and children (2.9; 1.4-5.9). As this is one of the first studies that investigated an association between exposure to mobile telecommunication networks and mental health behaviour more studies using personal dosimetry are warranted to confirm these findings.

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PMID: 

Biosci Biotechnol Biochem. 2019 Aug 8:1-9. Epub 2019 Aug 8. PMID: 31392935

Abstract Title: 

Electronic cigarette exposure reduces exercise performance and changes the biochemical profile of female mice.

Abstract: 

Electronic cigarette(s) (EC) becoming a preferred replacement for nicotine delivery among many smokers in recent years. However, the effect of EC on human health is inconclusive due to a lack of empirical research investigating EC-induced health hazard or benefit. In this study, we examine the effect of vapor produced by EC on exercise performance and health-related profiles in a mouse model. Female ICR mice were divided into five groups (n = 6 per group) and exposed for 14 days. Our results indicate that EC exposure leads to dose-dependent decrease in the grip strength and swimming time of the mice. The EC-treated groups also showed a dose-dependent decrease in liver and muscle glycogen storage. In addition, EC treatment had no negative effect on levels of biochemical indices. We also did not detect any adverse effect or gross abnormalities on the morphology of the major organs.

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PMID: 

Bull Tokyo Dent Coll. 2019 Feb 28 ;60(1):1-9. Epub 2019 Jan 31. PMID: 30700643

Abstract Title: 

Inhibitory Effects of Lingonberry Extract on Oral Streptococcal Biofilm Formation and Bioactivity.

Abstract: 

Phenolic compounds in fruits such as cranberries have been shown to promote a number of biological activities. The purpose of this study was to investigate the effects of polyphenolic compound-containing lingonberry extract on oral streptococci and compare them with the known anti-cariogenic activity of cranberries. Water-soluble and polyphenol-rich fractions (Fractions I and II, respectively) were isolated from cranberries and lingonberries. The effects of those fractions on the biofilm formation ability and bioactivity of Streptococcus mutans MT8148R, Streptococcus sobrinus 6715, and Streptococcus sanguinis ATCC 10556 were then evaluated. Cranberry or lingonberry Fraction II (at 0.5-1 mg/ml) significantly reduced biofilm formation by S. mutans, S. sobrinus, and S. sanguinis. In contrast, cranberry or lingonberry Fraction I (at 0.5-2 mg/ml) increased biofilm formation by S. mutans and S. sobrinus, but not by S. sanguinis. Fractions I and II (at 1-2 mg/ml) also reduced the bioactivity of S. mutans, while Fraction II (at 0.5 mg/ml) enhanced the bioactivity of all tested strains. The results revealed that lingonberries contained a larger amount of polyphenol than cranberries and that they showed almost the same level of activity against the biofilm formation ability and bioactivity of oral streptococci. This indicates that polyphenol-rich lingonberry fraction offers a promising natural food derivative for prevention of dental caries.

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PMID: 

Behav Res Ther. 2018 01 ;100:44-53. Epub 2017 Nov 22. PMID: 29179024

Abstract Title: 

Effects of brief mindfulness and loving-kindness meditation inductions on emotional and behavioral responses to social rejection among individuals with high borderline personality traits.

Abstract: 

Borderline personality disorder (BPD) is characterized by an enduring pattern of instability across affective, behavioral, cognitive, and interpersonal domains. Individuals with BPD are known to be particularly vulnerable to experiences of social rejection, but little work has examined strategies that may moderate their reactivity to social rejection. Using a laboratory experimental approach, this study investigated the effects of brief mindfulness and loving-kindness meditation (LKM) inductions on emotional and behavioral responses to social rejection in a sample of adults with high BPD traits. One hundred and eighteen participants were randomly assigned to receive 10 min of mindful breathing practice, LKM, or a no-instruction control condition, prior to exposure to a social rejection manipulation. Participants rated their emotions and completed a competitive reaction time task, which provided a proxy measure of aggression. Compared to the control condition, the mindfulness group demonstrated significantly quicker recovery in negative affect and feelings of rejection after social rejection. The mindfulness group also reported significantly quicker recovery in negative affect compared to the LKM group. Whereas baseline trait mindfulness negatively predicted aggressive behaviors across all participants, groups did not differ in immediate emotional reactivity or aggressive behavior following social rejection. The findings suggest that mindfulness training may be a promising strategy in alleviating negative emotional effects of social rejection among individuals with high borderline personality traits, and highlight the limited utility of brief LKM practice in buffering the effects of social rejection.

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PMID: 

Front Hum Neurosci. 2019 ;13:208. Epub 2019 Jun 27. PMID: 31316361

Abstract Title: 

The Effects of Different Stages of Mindfulness Meditation Training on Emotion Regulation.

Abstract: 

This study examined mood enhancement effects from 4-week focusing attention (FA) meditation and 4-week open monitoring (OM) meditation in an 8-week mindfulness training program designed for ordinary individuals. Forty participants were randomly assigned to a training group or a control group. All participants were asked to perform cognitive tasks and subjective scale tests at three time points (pre-, mid-, and post-tests). Compared with the participants in the control group, the participants in the meditation training group showed significantly decreased anxiety, depression, and rumination scores; significantly increased mindfulness scores; and significantly reduced reaction times (RTs) in the incongruent condition for the Stroop task. The present study demonstrated that 8-week mindfulness meditation training could effectively enhance the level of mindfulness and improve emotional states. Moreover, FA meditation could partially improve individual levels of mindfulness and effectively improve mood, while OM meditation could further improve individual levels of mindfulness and maintain a positive mood.

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PMID: 

Psychol Med. 2019 Jul 19:1-16. Epub 2019 Jul 19. PMID: 31322102

Abstract Title: 

Meditation techniques v. relaxation therapies when treating anxiety: a meta-analytic review.

Abstract: 

To what extent meditation techniques (which incorporate practices to regulate attention, construct individual values, or deconstruct self-related assumptions), are more or less effective than relaxation therapy in the treatment of anxiety, is not clear. The aim of this study was to examine the effectiveness of meditation compared to relaxation in reducing anxiety. A systematic review from PubMed, Embase, PsycInfo and the Cochrane Central was conducted. A meta-analysis of 14 RCTs (n = 862 participants suffering from anxiety disorders or high trait anxiety) was performed. Effect sizes (ESs) were determined by Hedges' g. Heterogeneity, risk of publication bias, quality of studies/interventions, and researcher allegiance, were evaluated. Meditation techniques incorporated attentional elements, and five of them also added constructive practices. No studies were found using deconstructive exercises. The overall ES was g = -0.23 [95% confidence interval (CI) -0.40 to -0.07], favouring meditation (number needed to treat = 7.74). Heterogeneity was low (I2 = 2; 95% CI 0 to 56). There was no evidence of publication bias, but few studies and interventions were of high quality, and allegiance might be moderating results. Meditation seems to be a bit more effective than relaxation in the treatment of anxiety, and it might also remain more effective at 12-month follow-up. However, more research using the full spectrum of meditation practices to treat different anxiety disorders, including independent studies to avoid researcher allegiance, is needed if we are to have a precise idea of the potential of these techniques compared to relaxation therapy.

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PMID: 

Am J Pharm Educ. 2019 Jun ;83(5):7001. PMID: 31333265

Abstract Title: 

Impact of a Yoga and Meditation Intervention on Students' Stress and Anxiety Levels.

Abstract: 

To evaluate the impact of a six-week yoga and meditation intervention on college students' stress perception, anxiety levels, and mindfulness skills.College students participated in a six-week pilot program that consisted of a 60-minute vinyasa flow yoga class once weekly, followed by guided meditation delivered by trained faculty members at the University of Rhode Island College of Pharmacy. Students completed pre- and post-intervention questionnaires to evaluate changes in the following outcomes: stress levels, anxiety levels, and mindfulness skills. The questionnaire consisted of three self-reporting tools: the Beck Anxiety Inventory (BAI), the Perceived Stress Scale (PSS), and the Five Facet Mindfulness Questionnaire (FFMQ). Students' scores on each were assessed to detect any changes from baseline using the numerical and categorical scales (low, medium, and high) for each instrument.Seventeen participants, aged 19 to 23 years, completed the study. Thirteen participants were female and four were male. Nine of the students were enrolled in the Doctor of Pharmacy program and eight were enrolled in other academic programs. Students' anxiety and stress scores decreased significantly while their total mindfulness increased significantly. Changes in categorical data from pre- to post-intervention on the BAI and PSS were significant, with no students scoring in the"high"category for stress or anxiety on the post-intervention questionnaire.Students experienced a reduction in stress and anxiety levels after completing a six-week yoga and meditation program preceding final examinations. Results suggest that adopting a mindfulness practice for as little as once per week may reduce stress and anxiety in college students. Administrators should consider including instruction in nonpharmacologic stress and anxiety reduction methods, within curricula in order to support student self-care.

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