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Suicide seasonality

Georgios D Makris, Johan Reutfors, Morten Andersen, Richard A White, Lisa Ekselius, Fotios C Papadopoulos
BACKGROUND: Decreased binding capacity of SERT in the prefrontal cortex has been observed in both suicide victims and suicide attempters. Moreover, some studies have shown that SERT has a seasonal variation with lower binding capacity in the spring and summer, which coincides with a seasonal peak of suicides. Our aim was to explore whether the season of treatment initiation with antidepressants is associated with suicide or suicide attempt and compare it with the underlying suicide seasonality in the general population...
March 10, 2017: Journal of Affective Disorders
Andrew Stickley, Chris Fook Sheng Ng, Shoko Konishi, Ai Koyanagi, Chiho Watanabe
Prior research has indicated that pollen might be linked to suicide mortality although the few studies that have been undertaken to date have produced conflicting findings and been limited to Western settings. This study examined the association between the level of airborne pollen and suicide mortality in Tokyo, Japan in the period from 2001 to 2011. The daily number of suicide deaths was obtained from the Japanese Ministry of Health, Labour and Welfare, with pollen data being obtained from the Tokyo Metropolitan Institute of Public Health...
May 2017: Environmental Research
Christos Christodoulou, Vasiliki Efstathiou, Ioannis Michopoulos, Maria Gkerekou, Antonios Paraschakis, Filippos Koutsaftis, Athanassios Douzenis
OBJECTIVE: The economic crisis and the implementation of austerity measures in Greece lead to significant socioeconomic changes. The effects of the crisis were mainly felt by the Greek population during the years 2011 and 2012. This study aimed to investigate the impact of Greece's economic crisis on the seasonality of suicides in the Athens Greater Area. METHODS: Data were collected for all recorded cases of suicides committed over a 5-year period (from 2008 to 2012) from the Athens Department of Forensic Medicine...
January 2017: Psychiatry Investigation
Minoru Sawa, Hiraki Koishikawa, Yoneatsu Osaki
Suicide has a great impact on the individual whose life is lost and the bereaved family members. The risk of a suicide reattempt is particularly high during the first 12 months after a suicide attempt. In this cohort study, risk factors for a suicide reattempt were explored among 291 patients at suicide risk. Clinical and demographic data were collected from a Japanese primary care hospital. Past psychiatric history and multiple diagnoses were associated with suicide reattempts in both genders. Drug overdose, past psychiatric history, and the summer season were linked to suicide reattempts among males...
December 28, 2016: Suicide & Life-threatening Behavior
Hee-Jung Jee, Chul-Hyun Cho, Yu Jin Lee, Nari Choi, Hyonggin An, Heon-Jeong Lee
OBJECTIVE: Previous studies have indicated that suicide rates have significant seasonal variations. There is seasonal discordance between temperature and solar radiation due to the monsoon season in South Korea. We investigated the seasonality of suicide and assessed its association with climate variables in South Korea. METHOD: Suicide rates were obtained from the National Statistical Office of South Korea, and climatic data were obtained from the Korea Meteorological Administration for the period of 1992-2010...
December 16, 2016: Acta Psychiatrica Scandinavica
J K Canner, K Giuliano, S Selvarajah, E R Hammond, E B Schneider
AIMS: To characterise and identify nationwide trends in suicide-related emergency department (ED) visits in the USA from 2006 to 2013. METHODS: We used data from the Nationwide Emergency Department Sample (NEDS) from 2006 to 2013. E-codes were used to identify ED visits related to suicide attempts and self-inflicted injury. Visits were characterised by factors such as age, sex, US census region, calendar month, as well as injury severity and mechanism. Injury severity and mechanism were compared between age groups and sex by chi-square tests and Wilcoxon rank-sum tests...
November 17, 2016: Epidemiology and Psychiatric Sciences
Shivanand Kattimani, Venkatalakshmi Penchilaiya, Siddharth Sarkar, V Muthukrishnan
BACKGROUND: Temporal variations of suicide attempts can help to better understand correlates of suicidal behavior. This study attempted to find the diurnal, weekly, and seasonal variations in suicide attempts at a tertiary care hospital in India. MATERIALS AND METHODS: This record-based study was conducted among patients evaluated at a crisis intervention clinic over a 4-year period at a tertiary care teaching hospital in Southern India. Patients who attempted suicide in recent past and had been medically stabilized were evaluated in this clinic...
April 2016: Journal of Family Medicine and Primary Care
P Grady Dixon, Adam J Kalkstein
There has been much research on the associations between weather variables and suicide rates. However, the state of understanding has remained rather stagnant due to many contradictory findings. The purpose of this project is to examine a larger database of suicides that includes a longer and more recent period of record (1975-2010) across numerous locations in the USA. In all, we examine nine total counties (and the primary city associated with them) with a special effort made to compare locations with varying degrees of temperature seasonality: Cook (Chicago), Fulton (Atlanta), King (Seattle), Los Angeles (Los Angeles), Maricopa (Phoenix), Miami-Dade (Miami), Philadelphia (Philadelphia), Salt Lake (Salt Lake City), and St...
November 7, 2016: International Journal of Biometeorology
Bernadett Seregi, Balázs Kapitány, Ákos Maróti-Agóts, Zoltán Rihmer, Xénia Gonda, Péter Döme
Several environmental factors with periodic changes in intensity during the calendar year have been put forward to explain the increase in suicide frequency during spring and summer. In the current study we investigated the effect of averaged daily sunshine duration of periods with different lengths and 'lags' (i.e. the number of days between the last day of the period for which the averaged sunshine duration was calculated and the day of suicide) on suicide risk. We obtained data on daily numbers of suicide cases and daily sunshine duration in Hungary from 1979 to 2013...
February 6, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
Chi-Leung Kwok, Paul S F Yip
BACKGROUND: The study of temporal variation in self-harm is important to understanding the underlying mechanisms of its occurrence. There are fewer studies on temporal variation in self-harm than in suicide. The aim of this study was to examine the seasonality of self-harm in Hong Kong and to test the hypothesis of diminishing seasonality. METHODS: We used secondary data from medical records of self-harm obtained from all the public hospitals in Hong Kong under the management of the Hospital Authority...
September 23, 2016: Journal of Affective Disorders
Mari Nerhus, Akiah O Berg, Levi R Kvitland, Ingrid Dieset, Sigrun Hope, Sandra R Dahl, Melissa A Weibell, Kristin L Romm, Ann Faerden, Ole A Andreassen, Ingrid Melle
BACKGROUND: There are indications that low S-25(OH)D is associated with increased disease severity in psychotic disorder. Our first aim was to investigate the relations between low S-25(OH)D and positive, negative and depressive symptoms. Our second aim was to explore if associations between S-25(OH)D and symptoms were influenced by levels of inflammatory markers. METHODS: Participants (N=358) with a medical history of one or more psychotic episodes were recruited...
December 2016: Schizophrenia Research
Yousef Veisani, Ali Delpisheh, Kourosh Sayehmiri, Ghobad Moradi, Jafar Hassanzadeh
No abstract text is available yet for this article.
September 2016: Iranian Journal of Medical Sciences
Guo-Zhen Lin, Li Li, Yun-Feng Song, Ying-Xue Zhou, Shuang-Quan Shen, Chun-Quan Ou
BACKGROUND: Preventing suicide is a global imperative. Although the effects of social and individual risk factors of suicide have been widely investigated, evidence of environmental effects of exposure to air pollution is scarce. We investigated the effects of ambient air pollution on suicide mortality in Guangzhou, China during 2003-2012. METHODS: A conditional logistic regression analysis with a time-stratified case-crossover design was performed to assess the effects of daily exposure to three standard air pollutants, including particulate matter less than 10 μm in aerodynamic diameter (PM10), sulphur dioxide (SO2) and nitrogen dioxide (NO2), on suicide mortality, after adjusting for the confounding effects of daily mean temperature, relative humidity, atmospheric pressure and sunshine duration...
2016: Environmental Health: a Global Access Science Source
Andrea Aguglia, Marta Moncalvo, Francesca Solia, Giuseppe Maina
OBJECTIVE: The aim of this study is to assess the prevalence of involuntary admissions with regard to seasonality and clinical associated features, in a sample of patients admitted to a psychiatric unit in a period of 24 months. METHODS: All subjects consecutively admitted to the Psychiatric Inpatient Unit of the San Luigi Gonzaga Hospital, Orbassano (University of Turin, Italy) from September 2013 to August 2015 were recruited. Socio-demographic and clinical characteristics were collected...
November 2016: International Journal of Psychiatry in Clinical Practice
K Ellicott Colson, Jessica Galin, Jennifer Ahern
Suicide is a leading cause of premature mortality. Aspects of the social environment such as incidents of violence in the community may induce psychological distress and affect suicidality, but these determinants are not well understood. We conducted an ecological study using California vital statistics records, geocoded to address of the decedent, to examine whether proximity to homicide was associated with the occurrence of suicide in urban census tracts. For each urban tract (N = 7194) and each month in 2012, we assessed homicides in the tract or within buffer zones around the tract with a 1-month lag...
October 2016: Journal of Urban Health: Bulletin of the New York Academy of Medicine
J L Anderson, M A St Hilaire, R R Auger, C A Glod, S J Crow, A N Rivera, S M Fuentes Salgado, S J Pullen, T K Kaufman, A J Selby, D J Wolfe
Despite widely published speculation regarding a potential potency advantage of short-wavelength (blue-appearing) light for Seasonal Affective Disorder (SAD) treatment, there have been few systematic studies. Those comparing short-wavelength to broad-wavelength (white) light under actual clinical conditions suggest equivalent effectiveness. This multicenter, parallel-group design trial was undertaken to compare the effects of light therapy on SAD using blue (~465 nm) versus blue-free (595-612 nm) LED lights...
August 5, 2016: Chronobiology International
Antonio Preti, Gianluca Lentini
The prediction of suicidal behavior is a complex task. To fine-tune targeted preventative interventions, predictive analytics (i.e. forecasting future risk of suicide) is more important than exploratory data analysis (pattern recognition, e.g. detection of seasonality in suicide time series). This study sets out to investigate the accuracy of forecasting models of suicide for men and women. A total of 101 499 male suicides and of 39 681 female suicides - occurred in Italy from 1969 to 2003 - were investigated...
2016: Chronobiology International
Mark E Beecher, Dennis Eggett, Davey Erekson, Lawrence B Rees, Jennie Bingham, Jared Klundt, Russell J Bailey, Clark Ripplinger, Jessica Kirchhoefer, Robert Gibson, Derek Griner, Jonathan C Cox, R D Boardman
BACKGROUND: Researchers have examined the relationship between mental health and weather/pollution with mixed results. The current study aimed to examine a range of weather and atmospheric phenomena and their association with time-bound mental health data. METHODS: Nineteen different weather/pollution variables were examined in connection with an archive of self-reported mental health data for university students participating in mental health treatment (n=16,452) using the Outcome Questionnaire 45...
November 15, 2016: Journal of Affective Disorders
Haekyung Jeon-Slaughter, Cynthia A Claassen, David A Khan, Perry Mihalakos, Kevin B Lee, E Sherwood Brown
OBJECTIVES: Prior research suggests a possible association between pollen and suicide. No studies have examined the relationship between pollen and attempted suicide. This study examines the temporal association between airborne pollen counts and nonfatal suicidal and nonsuicidal self-directed violence (SDV) requiring an emergency department visit. METHODS: Data on daily emergency department visits due to nonfatal SDV as identified by ICD-9 diagnosis criteria were extracted from emergency department medical records of Parkland Memorial Hospital in Dallas, Texas, between January 2000 and December 2003...
June 7, 2016: Journal of Clinical Psychiatry
Naser Mozafari, Haleh Talaie, Simin Dokht Shoaei, Morteza Hashemian, Arezou Mahdavinejad
BACKGROUND: Body temperature is a critical criterion of health. Drugs and a variety of poisons can affect body temperature in poisoned patients, causing hyperthermia and hyperpyrexia. OBJECTIVES: Our previous study's findings in patients poisoned with organophosphate led us to the goal of this study: obtaining the initial tympanic temperature in patients poisoned by a variety of toxins. MATERIALS AND METHODS: A cross-sectional study reviewed the records of poisoned patients who were admitted to the toxicological intensive care unit (TICU) at Loghman Hakim hospital poison center (LHHPC) from February 2014 to February 2015...
April 2016: Iranian Red Crescent Medical Journal
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