Vitamin D varies with latitude - map of Chile
Vitamin D vs latitude - Chile
Strangely, the above map was in the supplement PDF, not the main PDF
Supplement from: Passive Commuting and Higher Sedentary Time Is Associated with Vitamin D Deficiency in Adult and Older Women: Results from Chilean National Health Survey 2016–2017
Download the PDF from VitaminDWiki
Some health problems that increase with latitude in Chile
Seasonal Variation in Suicidal Deaths in Chile: Its Relationship to Latitude - 2006 https://doi.org/10.1159/000090596
Higher latitude and lower solar radiation influence on anaphylaxis in Chilean children - 2014 FREE PDF
Associations of Blood Pressure With Geographical Latitude, Solar Radiation, and Ambient Temperature: Results From the Chilean Health Survey, 2009–2010 = 2016 FREE PDF
Geographic latitude and sleep duration: A population-based survey from the Tropic of Capricorn to the Antarctic Circle - Jan 2017 https://doi.org/10.1080/07420528.2016.1277735
Higher incidence of many health problems ifHigher Latitude
Many diseases increase with latitude (low UV, Vitamin D) many "smile" charts
Dementia risk increases with latitude (less vitamin D) - Feb 2015 Sweden
Schizophrenia and vitamin D have latitude-related genes – Nov 2010
Headaches vary with latitude and season and perhaps vitamin D as well -May 2010
Many autoimmune diseases associated with latitude and vitamin D receptor – March 2016
Rheumatoid Arthritis associated with lower vitamin D and higher latitude – meta-analysis Jan 2016
Crohn’s disease associated with vitamin D and latitude – meta-analysis Dec 2015
Cancer and Latitude
Non-melanoma skin cancer varies with latitude, melanoma does not – April 2017
MS and latitude
Why has the MS latitude gradient disappeared – Oct 2011 - reasons might apply to other diseases as well
MS is related to latitude – conclusion from 321 studies – April 2011
Multiple Sclerosis incidence varies with latitude (noted in Brazil too) – Nov 2015