TY - JOUR
TI - Tea and coffee consumption in relation to vitamin D and calcium levels
in Saudi adolescents
AU - Al-Othman, Abdulaziz
AU - Al-Musharaf, Sara
AU - Al-Daghri, Nasser M. and
AU - Yakout, Sobhy
AU - Alkharfy, Khalid M.
AU - Al-Saleh, Yousef
AU - Al-Attas,
AU - Omar S.
AU - Alokail, Majed S.
AU - Moharram, Osama
AU - Sabico, Shaun and
AU - Kumar, Sudhesh
AU - Chrousos, George P.
JO - Nutrition Journal
PY - 2012
VL - 11
TODO - null
SP - null
PB - BioMed Central Ltd.
SN - 1475-2891
TODO - 10.1186/1475-2891-11-56
TODO - Coffee intake; Tea intake; Vitamin D levels; Saudi adolescents
TODO - Background: Coffee and tea consumption was hypothesized to interact with
variants of vitamin D-receptor polymorphisms, but limited evidence
exists. Here we determine for the first time whether increased coffee
and tea consumption affects circulating levels of 25-hydroxyvitamin D in
a cohort of Saudi adolescents.
Methods: A total of 330 randomly selected Saudi adolescents were
included. Anthropometrics were recorded and fasting blood samples were
analyzed for routine analysis of fasting glucose, lipid levels, calcium,
albumin and phosphorous. Frequency of coffee and tea intake was noted.
25-hydroxyvitamin D levels were measured using enzyme-linked
immunosorbent assays.
Results: Improved lipid profiles were observed in both boys and girls,
as demonstrated by increased levels of HDL-cholesterol, even after
controlling for age and BMI, among those consuming 9-12 cups of
coffee/week. Vitamin D levels were significantly highest among those
consuming 9-12 cups of tea/week in all subjects (p-value 0.009)
independent of age, gender, BMI, physical activity and sun exposure.
Conclusion: This study suggests a link between tea consumption and
vitamin D levels in a cohort of Saudi adolescents, independent of age,
BMI, gender, physical activity and sun exposure. These findings should
be confirmed prospectively.
ER -