Yazd Health Study (YaHS)
Yazd health study (YaHS) is a
prospective cohort study, with 10,000 participants, established in 2013 in
Yazd, Iran. The word “cohort” has been adopted into epidemiology to define a
set of people followed over a period of time. W.H. Frost, an epidemiologist
from the early 1900s, was the first to use the word “cohort” in his 1935
publication assessing age-specific mortality rates and tuberculosis.
YaHS has several sub studies,
including Yazd Nutrition Study (Motale e Taghzieh Mardom Yazd- Tamiz), Yazd
Electromagnetic Health Study (Motale e Salamat Mayadin Electro Meghnatis-
MOSAMA) and Yazd Heavy Metals Study (HEMES). These studies are all funded and
are in different phases of progress. Overall, more than 1,000 variables have
been collected from each participants using the highest available standards.
Ethics approval of YaHS was issued by the Ethics Committee of Shahid Sadoughi
University of Medical Sciences and written informed consents were obtained from
of approved research YaHS data plan are available through the following link: