Why the study?
Do seasonal variations affect glucose control (HbA1c) in Lebanese patients with type 1 diabetes?
Do seasonal variations affect glucose control (HbA1c) in Lebanese patients with type 1 diabetes?
Glucose control in young Lebanese patients with type 1 diabetes fluctuates seasonally, with worse control during colder months.
Seasonal HbA1c worsening was associated with poorer winter control in Lebanese T1D; hypothesis-generating for targeted monitoring, requiring prospective validation.
The purpose of this study is to investigate the seasonal variations in glucose control in a population of Lebanese patients with type 1 diabetes mellitus. Around 1000 patients were involved in the study over three years and the mean percentage HbA1c (glycosylated hemoglobin A1c) values were compared between summer and winter. The mean % HbA1c of winter (8.6%) was significantly higher than that of summer (8.0%) (p < 0.001). Percentage glycosylated hemoglobin among a population of more than 1000 young type 1 Lebanese diabetics fluctuated seasonally with significantly lower levels and better glucose control during the warm months of the year in spring and summer compared to the colder months of the year. This pattern followed trends similar to those of many physiologic markers, cardiovascular outcome and mortality.
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Baba et al. (2008) studied this question.
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