Latitude is significantly associated with the prevalence of multiple sclerosis: a meta-analysis
TLDR
The most comprehensive review of MS prevalence to date has confirmed a statistically significant positive association between MS prevalence and latitude globally, and the persistence of a positive gradient in Europe after adjustment for HLA-DRB1 allele frequencies strongly supports a role for environmental factors which vary with latitude.Abstract:
Background There is a striking latitudinal gradient in multiple sclerosis (MS) prevalence, but exceptions in Mediterranean Europe and northern Scandinavia, and some systematic reviews, have suggested that the gradient may be an artefact. The authors sought to evaluate the association between MS prevalence and latitude by meta-regression. Methods and findings Studies were sourced from online databases, reference mining and author referral. Prevalence estimates were age-standardised to the 2009 European population. Analyses were carried out by means of random-effects meta-regression, weighted with the inverse of within-study variance. The authors included 650 prevalence estimates from 321 peer-reviewed studies; 239 were age-standardised, and 159 provided sex-specific data. The authors found a significant positive association (change in prevalence per degree-latitude) between age-standardised prevalence (1.04, p Conclusion This, the most comprehensive review of MS prevalence to date, has confirmed a statistically significant positive association between MS prevalence and latitude globally. Exceptions to the gradient in the Italian region and northern Scandinavia are likely a result of genetic and behavioural–cultural variations. The persistence of a positive gradient in Europe after adjustment for HLA-DRB1 allele frequencies strongly supports a role for environmental factors which vary with latitude, the most prominent candidates being ultraviolet radiation (UVR)/vitamin D.read more
Citations
More filters
Journal ArticleDOI
Interactions between genetic, lifestyle and environmental risk factors for multiple sclerosis
TL;DR: Strong evidence now supports obesity during adolescence as a factor increasing MS risk, and recent data on environmental and lifestyle factors are reviewed, with a focus on gene–environment interactions.
Journal ArticleDOI
Global, regional, and national burden of multiple sclerosis 1990–2016: a systematic analysis for the Global Burden of Disease Study 2016
Mitchell T. Wallin,William J. Culpepper,Emma Nichols,Zulfiqar A Bhutta,Tsegaye Tewelde Gebrehiwot,Simon I. Hay,Ibrahim A Khalil,Kristopher J Krohn,Xiaofeng Liang,Mohsen Naghavi,Ali H. Mokdad,Molly R Nixon,Robert Reiner,Benn Sartorius,Mari Smith,Roman Topor-Madry,Andrea Werdecker,Theo Vos,Valery L. Feigin,Christopher J L Murray +19 more
TL;DR: The global burden of multiple sclerosis and its relationship with country development level and the Socio-demographic Index, a composite indicator of income per person, years of education, and fertility, is quantified to assess relations with development level.
Journal ArticleDOI
Environmental risk factors and multiple sclerosis: an umbrella review of systematic reviews and meta-analyses.
Lazaros Belbasis,Vanesa Bellou,Evangelos Evangelou,Evangelos Evangelou,John P. A. Ioannidis,Ioanna Tzoulaki,Ioanna Tzoulaki +6 more
TL;DR: A biomarker of Epstein-Barr virus (anti-EBNA IgG seropositivity), infectious mononucleosis, and smoking showed the strongest consistent evidence of an association with multiple sclerosis.
Journal ArticleDOI
Multiple Sclerosis: Mechanisms and Immunotherapy
TL;DR: Major challenges for MS research involve understanding the mechanisms of disease progression, developing treatment for progressive MS, and determining the degree to which progressive disease can be prevented by early treatment.
Journal ArticleDOI
Geographical variability and environmental risk factors in inflammatory bowel disease
Siew C. Ng,Charles N. Bernstein,Morten H. Vatn,Peter L. Lakatos,Edward V. Loftus,Curt Tysk,Colm O'Morain,Bjørn Moum,Jean-Frederic Colombel +8 more
TL;DR: The present review aims to provide an update of the literature exploring geographical variability in IBD and to explore the environmental risk factors that may account for this variability.
References
More filters
Journal Article
Statistical methods in cancer research. Volume II--The design and analysis of cohort studies.
N. E. Breslow,N. E. Day +1 more
TL;DR: What do you do to start reading statistical methods in cancer research vol ii the design and analysis of cohort studies?
Book
Vitamin D
TL;DR: In what case do you like reading so much? What about the type of the vitamin d the calcium homeostatic steroid hormone book? The needs to read? Well, everybody has their own reason why should read some books as discussed by the authors.
Journal ArticleDOI
Serum 25-hydroxyvitamin D levels and risk of multiple sclerosis
TL;DR: The results of this study suggest that high circulating levels of vitamin D are associated with a lower risk of multiple sclerosis.
Journal ArticleDOI
Vitamin D intake and incidence of multiple sclerosis
Karl Münger,Shumin M. Zhang,Éilis J. O'Reilly,Miguel A. Hernán,Michael J. Olek,Walter C. Willett,Alberto Ascherio +6 more
TL;DR: A protective effect of vitamin D intake on risk of developing MS is found in two large cohorts of women following diet assessed at baseline and updated every 4 years thereafter.
Journal ArticleDOI
The Changing Demographic Pattern of Multiple Sclerosis Epidemiology
TL;DR: The literature search and meta-regression analyses indicated an almost universal increase in prevalence and incidence of MS over time; they challenge the well accepted theory of a latitudinal gradient of incidence in Europe and North America, while this gradient is still apparent for Australia and New Zealand; and suggest a general, although not ubiquitous, increase in incidence ofMS in females.
Related Papers (5)
Diagnostic criteria for multiple sclerosis: 2010 Revisions to the McDonald criteria
Chris H. Polman,Stephen C. Reingold,Brenda Banwell,Michel Clanet,Jeffrey A. Cohen,Massimo Filippi,Kazuo Fujihara,Eva Havrdova,Michael Hutchinson,Ludwig Kappos,Fred D. Lublin,Xavier Montalban,Paul L. O’Connor,Magnhild Sandberg-Wollheim,Alan J. Thompson,Emmanuelle Waubant,Brian G. Weinshenker,Jerry S. Wolinsky +17 more
The Changing Demographic Pattern of Multiple Sclerosis Epidemiology
Genetic risk and a primary role for cell-mediated immune mechanisms in multiple sclerosis
Stephen Sawcer,Garrett Hellenthal,Matti Pirinen,Chris C. A. Spencer,Nikolaos A. Patsopoulos,Nikolaos A. Patsopoulos,Nikolaos A. Patsopoulos,Loukas Moutsianas,Alexander T. Dilthey,Zhan Su,Colin Freeman,Sarah E. Hunt,Sarah Edkins,Emma Gray,David R. Booth,Simon C. Potter,An Goris,Gavin Band,Annette Bang Oturai,A. Strange,Janna Saarela,Céline Bellenguez,Bertrand Fontaine,Matthew W. Gillman,Bernhard Hemmer,Rhian Gwilliam,Frauke Zipp,Alagurevathi Jayakumar,Roland Martin,Stephen Leslie,Stanley Hawkins,Eleni Giannoulatou,Sandra D'Alfonso,Hannah Blackburn,Filippo Martinelli Boneschi,Jennifer Liddle,Hanne F. Harbo,Hanne F. Harbo,M. Perez,Anne Spurkland,Matthew Waller,Marcin P. Mycko,Michelle Ricketts,Manuel Comabella,Naomi Hammond,Ingrid Kockum,O. T. McCann,Maria Ban,Pamela Whittaker,Anu Kemppinen,Paul A. Weston,Clive Hawkins,Sara Widaa,John Zajicek,John Zajicek,Serge Dronov,Neil Robertson,Suzannah Bumpstead,Lisa F. Barcellos,Lisa F. Barcellos,Rathi Ravindrarajah,Roby Abraham,Lars Alfredsson,Kristin G. Ardlie,Cristin Aubin,Amie Baker,K Baker,Sergio E. Baranzini,Laura Bergamaschi,Roberto Bergamaschi,Allan L. Bernstein,Achim Berthele,Mike Boggild,Jonathan P. Bradfield,David Brassat,Simon Broadley,Dorothea Buck,Helmut Butzkueven,Ruggero Capra,William M. Carroll,Paola Cavalla,Elisabeth Gulowsen Celius,Sabine Cepok,Rosetta M. Chiavacci,Françoise Clerget-Darpoux,Katleen Clysters,Giancarlo Comi,Mark D. Cossburn,Isabelle Cournu-Rebeix,M. B. Cox,Wendy Cozen,Bruce A.C. Cree,Anne H. Cross,Daniele Cusi,Mark J. Daly,Mark J. Daly,Emma J. Davis,Paul I.W. de Bakker,Paul I.W. de Bakker,Paul I.W. de Bakker,Marc Debouverie,Marie B. D'hooghe,K Dixon,Rita Dobosi,Bénédicte Dubois,David Ellinghaus,Irina Elovaara,Federica Esposito,Claire Fontenille,Simon J. Foote,Andre Franke,Daniela Galimberti,Angelo Ghezzi,Joseph T. Glessner,Refujia Gomez,Olivier Gout,Colin A. Graham,Struan F.A. Grant,Struan F.A. Grant,Franca Rosa Guerini,Hakon Hakonarson,Hakon Hakonarson,Per Hall,Anders Hamsten,Hans-Peter Hartung,Robert Heard,Simon Heath,Jeremy Hobart,Jeremy Hobart,Muna Hoshi,Carmen Infante-Duarte,Gillian Ingram,Wendy Ingram,Wendy Ingram,Talat Islam,Maja Jagodic,Michael Kabesch,Allan G. Kermode,Trevor J. Kilpatrick,Cecilia Kim,Norman Klopp,Keijo Koivisto,Malin Larsson,Mark Lathrop,Jeannette Lechner-Scott,Maurizio Leone,Virpi M. Leppä,Ulrika Liljedahl,Izaura Lima Bomfim,Robin R. Lincoln,Jenny Link,Jianjun Liu,Åslaug R. Lorentzen,Åslaug R. Lorentzen,Sara Lupoli,Fabio Macciardi,Fabio Macciardi,Thomas M. Mack,Mark Marriott,Vittorio Martinelli,Deborah F. Mason,Jacob L. McCauley,Frank D. Mentch,Inger-Lise Mero,Tania Mihalova,Xavier Montalban,John Mottershead,Kjell-Morten Myhr,Paola Naldi,William E R Ollier,Alison Page,Aarno Palotie,Jean Pelletier,Laura Piccio,Trevor Pickersgill,Fredrik Piehl,Susan Pobywajlo,Hong L. Quach,Patricia P. Ramsay,Mauri Reunanen,Richard Reynolds,John D. Rioux,John D. Rioux,Mariaemma Rodegher,Sabine Roesner,Justin P. Rubio,Ina-Maria Rueckert,Marco Salvetti,Erika Salvi,Adam Santaniello,Catherine Schaefer,Stefan Schreiber,Christian Schulze,Rodney J. Scott,Finn Sellebjerg,Krzysztof Selmaj,David Sexton,Ling Shen,Brigid Simms-Acuna,Sheila Skidmore,Patrick M. A. Sleiman,C. Smestad,Per Soelberg Sørensen,Helle Bach Søndergaard,Jim Stankovich,Richard C. Strange,Anna-Maija Sulonen,Emilie Sundqvist,Ann-Christine Syvaenen,Francesca Taddeo,Bruce V. Taylor,Jenefer M. Blackwell,Jenefer M. Blackwell,Jenefer M. Blackwell,Pentti J. Tienari,Elvira Bramon,Ayman Tourbah,Matthew A. Brown,Ewa Tronczynska,Juan P. Casas,Niall Tubridy,Aiden Corvin,Jane Vickery,Jane Vickery,Janusz Jankowski,Pablo Villoslada,Hugh S. Markus,Kai Wang,Christopher G. Mathew,James Wason,Colin N. A. Palmer,H-Erich Wichmann,H-Erich Wichmann,Robert Plomin,Ernest Willoughby,Anna Rautanen,Juliane Winkelmann,Michael Wittig,Richard C. Trembath,J. Yaouanq,Ananth C. Viswanathan,Ananth C. Viswanathan,Haitao Zhang,Nicholas W. Wood,Rebecca L. Zuvich,Panos Deloukas,Cordelia Langford,Audrey Duncanson,Jorge R. Oksenberg,Margaret A. Pericak-Vance,Jonathan L. Haines,Tomas Olsson,Jan Hillert,Adrian J. Ivinson,Philip L. De Jager,Philip L. De Jager,Philip L. De Jager,Leena Peltonen,Graeme J. Stewart,David A. Hafler,David A. Hafler,Stephen L. Hauser,Gil McVean,Peter Donnelly,Peter Donnelly,Alastair Compston +265 more