Abstract
In many international studies, rates of completed suicide and suicide attempts have a seasonal pattern that peaks in spring or summer. This exploratory study investigated the association between solar insolation and a history of suicide attempt in patients with bipolar I disorder. Solar insolation is the amount of electromagnetic energy from the Sun striking a surface area on Earth. Data were collected previously from 5536 patients with bipolar I disorder at 50 collection sites in 32 countries at a wide range of latitudes in both hemispheres. Suicide related data were available for 3365 patients from 310 onset locations in 51 countries. 1047 (31.1%) had a history of suicide attempt. There was a significant inverse association between a history of suicide attempt and the ratio of mean winter solar insolation/mean summer solar insolation. This ratio is smallest near the poles where the winter insolation is very small compared to the summer insolation. This ratio is largest near the equator where there is relatively little variation in the insolation over the year. Other variables in the model that were positively associated with suicide attempt were being female, a history of alcohol or substance abuse, and being in a younger birth cohort. Living in a country with a state-sponsored religion decreased the association. (All estimated coefficients p < 0.01). In summary, living in locations with large changes in solar insolation between winter and summer may be associated with increased suicide attempts in patients with bipolar disorder. Further investigation of the impacts of solar insolation on the course of bipolar disorder is needed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1-9 |
| Number of pages | 9 |
| Journal | Journal of Psychiatric Research |
| Volume | 113 |
| DOIs | |
| State | Published - Jun 1 2019 |
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Keywords
- Bipolar disorder
- Seasonal variation
- Solar insolation
- Suicide
- Sunlight
ASJC Scopus subject areas
- Psychiatry and Mental health
- Biological Psychiatry
Cite this
Association between solar insolation and a history of suicide attempts in bipolar I disorder. / Bauer, Michael; Glenn, Tasha; Alda, Martin; Andreassen, Ole A.; Angelopoulos, Elias; Ardau, Raffaella; Ayhan, Yavuz; Baethge, Christopher; Bauer, Rita; Baune, Bernhard T.; Becerra-Palars, Claudia; Bellivier, Frank; Belmaker, Robert H.; Berk, Michael; Bersudsky, Yuly; Bicakci, Şule; Birabwa-Oketcho, Harriet; Bjella, Thomas D.; Cabrera, Jorge; Wo Cheung, Eric Y.; Del Zompo, Maria; Dodd, Seetal; Donix, Markus; Etain, Bruno; Fagiolini, Andrea; Fountoulakis, Kostas N.; Frye, Mark A; Gonzalez-Pinto, Ana; Gottlieb, John F.; Grof, Paul; Harima, Hirohiko; Henry, Chantal; Isometsä, Erkki T.; Janno, Sven; Kapczinski, Flávio; Kardell, Mathias; Khaldi, Slim; Kliwicki, Sebastian; König, Barbara; Kot, Timur L.; Krogh, Rikke; Kunz, Mauricio; Lafer, Beny; Landén, Mikael; Larsen, Erik R.; Lewitzka, Ute; Licht, Rasmus W.; Lopez-Jaramillo, Carlos; MacQueen, Glenda; Manchia, Mirko; Marsh, Wendy; Martinez-Cengotitabengoa, Mónica; Melle, Ingrid; Meza-Urzúa, Fátima; Ming, Mok Yee; Monteith, Scott; Morken, Gunnar; Mosca, Enrica; Mozzhegorov, Anton A.; Munoz, Rodrigo; Mythri, Starlin V.; Nacef, Fethi; Nadella, Ravi K.; Nery, Fabiano G.; Nielsen, René E.; O'Donovan, Claire; Omrani, Adel; Osher, Yamima; Sørensen, Helle Østermark; Ouali, Uta; Ruiz, Yolanda Pica; Pilhatsch, Maximilian; Pinna, Marco; da Ponte, Francisco D.R.; Quiroz, Danilo; Ramesar, Raj; Rasgon, Natalie; Reddy, M. S.; Reif, Andreas; Ritter, Philipp; Rybakowski, Janusz K.; Sagduyu, Kemal; Raghuraman, Bharathram Sathur; Scippa, Ângela M.; Severus, Emanuel; Simhandl, Christian; Stackhouse, Paul W.; Stein, Dan J.; Strejilevich, Sergio; Subramaniam, Mythily; Sulaiman, Ahmad Hatim; Suominen, Kirsi; Tagata, Hiromi; Tatebayashi, Yoshitaka; Tondo, Leonardo; Torrent, Carla; Vaaler, Arne E.; Vares, Edgar; Veeh, Julia; Vieta, Eduard; Viswanath, Biju; Yoldi-Negrete, Maria; Zetin, Mark; Zgueb, Yosra; Whybrow, Peter C.
In: Journal of Psychiatric Research, Vol. 113, 01.06.2019, p. 1-9.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Association between solar insolation and a history of suicide attempts in bipolar I disorder
AU - Bauer, Michael
AU - Glenn, Tasha
AU - Alda, Martin
AU - Andreassen, Ole A.
AU - Angelopoulos, Elias
AU - Ardau, Raffaella
AU - Ayhan, Yavuz
AU - Baethge, Christopher
AU - Bauer, Rita
AU - Baune, Bernhard T.
AU - Becerra-Palars, Claudia
AU - Bellivier, Frank
AU - Belmaker, Robert H.
AU - Berk, Michael
AU - Bersudsky, Yuly
AU - Bicakci, Şule
AU - Birabwa-Oketcho, Harriet
AU - Bjella, Thomas D.
AU - Cabrera, Jorge
AU - Wo Cheung, Eric Y.
AU - Del Zompo, Maria
AU - Dodd, Seetal
AU - Donix, Markus
AU - Etain, Bruno
AU - Fagiolini, Andrea
AU - Fountoulakis, Kostas N.
AU - Frye, Mark A
AU - Gonzalez-Pinto, Ana
AU - Gottlieb, John F.
AU - Grof, Paul
AU - Harima, Hirohiko
AU - Henry, Chantal
AU - Isometsä, Erkki T.
AU - Janno, Sven
AU - Kapczinski, Flávio
AU - Kardell, Mathias
AU - Khaldi, Slim
AU - Kliwicki, Sebastian
AU - König, Barbara
AU - Kot, Timur L.
AU - Krogh, Rikke
AU - Kunz, Mauricio
AU - Lafer, Beny
AU - Landén, Mikael
AU - Larsen, Erik R.
AU - Lewitzka, Ute
AU - Licht, Rasmus W.
AU - Lopez-Jaramillo, Carlos
AU - MacQueen, Glenda
AU - Manchia, Mirko
AU - Marsh, Wendy
AU - Martinez-Cengotitabengoa, Mónica
AU - Melle, Ingrid
AU - Meza-Urzúa, Fátima
AU - Ming, Mok Yee
AU - Monteith, Scott
AU - Morken, Gunnar
AU - Mosca, Enrica
AU - Mozzhegorov, Anton A.
AU - Munoz, Rodrigo
AU - Mythri, Starlin V.
AU - Nacef, Fethi
AU - Nadella, Ravi K.
AU - Nery, Fabiano G.
AU - Nielsen, René E.
AU - O'Donovan, Claire
AU - Omrani, Adel
AU - Osher, Yamima
AU - Sørensen, Helle Østermark
AU - Ouali, Uta
AU - Ruiz, Yolanda Pica
AU - Pilhatsch, Maximilian
AU - Pinna, Marco
AU - da Ponte, Francisco D.R.
AU - Quiroz, Danilo
AU - Ramesar, Raj
AU - Rasgon, Natalie
AU - Reddy, M. S.
AU - Reif, Andreas
AU - Ritter, Philipp
AU - Rybakowski, Janusz K.
AU - Sagduyu, Kemal
AU - Raghuraman, Bharathram Sathur
AU - Scippa, Ângela M.
AU - Severus, Emanuel
AU - Simhandl, Christian
AU - Stackhouse, Paul W.
AU - Stein, Dan J.
AU - Strejilevich, Sergio
AU - Subramaniam, Mythily
AU - Sulaiman, Ahmad Hatim
AU - Suominen, Kirsi
AU - Tagata, Hiromi
AU - Tatebayashi, Yoshitaka
AU - Tondo, Leonardo
AU - Torrent, Carla
AU - Vaaler, Arne E.
AU - Vares, Edgar
AU - Veeh, Julia
AU - Vieta, Eduard
AU - Viswanath, Biju
AU - Yoldi-Negrete, Maria
AU - Zetin, Mark
AU - Zgueb, Yosra
AU - Whybrow, Peter C.
PY - 2019/6/1
Y1 - 2019/6/1
N2 - In many international studies, rates of completed suicide and suicide attempts have a seasonal pattern that peaks in spring or summer. This exploratory study investigated the association between solar insolation and a history of suicide attempt in patients with bipolar I disorder. Solar insolation is the amount of electromagnetic energy from the Sun striking a surface area on Earth. Data were collected previously from 5536 patients with bipolar I disorder at 50 collection sites in 32 countries at a wide range of latitudes in both hemispheres. Suicide related data were available for 3365 patients from 310 onset locations in 51 countries. 1047 (31.1%) had a history of suicide attempt. There was a significant inverse association between a history of suicide attempt and the ratio of mean winter solar insolation/mean summer solar insolation. This ratio is smallest near the poles where the winter insolation is very small compared to the summer insolation. This ratio is largest near the equator where there is relatively little variation in the insolation over the year. Other variables in the model that were positively associated with suicide attempt were being female, a history of alcohol or substance abuse, and being in a younger birth cohort. Living in a country with a state-sponsored religion decreased the association. (All estimated coefficients p < 0.01). In summary, living in locations with large changes in solar insolation between winter and summer may be associated with increased suicide attempts in patients with bipolar disorder. Further investigation of the impacts of solar insolation on the course of bipolar disorder is needed.
AB - In many international studies, rates of completed suicide and suicide attempts have a seasonal pattern that peaks in spring or summer. This exploratory study investigated the association between solar insolation and a history of suicide attempt in patients with bipolar I disorder. Solar insolation is the amount of electromagnetic energy from the Sun striking a surface area on Earth. Data were collected previously from 5536 patients with bipolar I disorder at 50 collection sites in 32 countries at a wide range of latitudes in both hemispheres. Suicide related data were available for 3365 patients from 310 onset locations in 51 countries. 1047 (31.1%) had a history of suicide attempt. There was a significant inverse association between a history of suicide attempt and the ratio of mean winter solar insolation/mean summer solar insolation. This ratio is smallest near the poles where the winter insolation is very small compared to the summer insolation. This ratio is largest near the equator where there is relatively little variation in the insolation over the year. Other variables in the model that were positively associated with suicide attempt were being female, a history of alcohol or substance abuse, and being in a younger birth cohort. Living in a country with a state-sponsored religion decreased the association. (All estimated coefficients p < 0.01). In summary, living in locations with large changes in solar insolation between winter and summer may be associated with increased suicide attempts in patients with bipolar disorder. Further investigation of the impacts of solar insolation on the course of bipolar disorder is needed.
KW - Bipolar disorder
KW - Seasonal variation
KW - Solar insolation
KW - Suicide
KW - Sunlight
UR - http://www.scopus.com/inward/record.url?scp=85063114648&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85063114648&partnerID=8YFLogxK
U2 - 10.1016/j.jpsychires.2019.03.001
DO - 10.1016/j.jpsychires.2019.03.001
M3 - Article
C2 - 30878786
AN - SCOPUS:85063114648
VL - 113
SP - 1
EP - 9
JO - Journal of Psychiatric Research
JF - Journal of Psychiatric Research
SN - 0022-3956
ER -