Seasonal variations in HbA1c among type 2 diabetes patients on a semi-arid climate between the years 2005–2015

Raphael, Allon; Friger, Michael; Biderman, Aya

doi:10.1016/j.pcd.2020.11.013

Cited by 10 publications

(11 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results of the study showed differences in maximum and minimum monthly HbA1c in 2018 and 2019 of 0.33% and 0.37%, respectively. These findings are similar to those in previous studies showing differences of about 0.2–0.5% [ 6 – 8 , 15 , 16 , 20 ]. HbA1c was higher in winter–spring and reached a nadir in summer–autumn in both years, which is also consistent with previous studies showing a higher HbA1c in cooler seasons and a nadir in hotter seasons [ 6 – 17 ].…”

Section: Discussionsupporting

confidence: 93%

“…However, the HbA1c value is also influenced by conditions, such as hemodialysis, age, genetic background, race/ethnicity, anemia and hemoglobinopathies [4]. HbA1c also shows seasonal variations in type 1 and type 2 diabetes, with higher levels in winter (cooler season) and nadir levels in summer (warmer season) [6][7][8][9][10][11][12][13][14][15][16][17][18], although different seasonal variations have also been suggested [19,20]. Therefore, treatment in which seasonal variations are taken into consideration may be desirable to achieve good glycemic control.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Seasonal variations and the influence of COVID-19 pandemic on hemoglobin A1c, glycoalbumin, and low-density lipoprotein cholesterol

et al. 2022

View full text Add to dashboard Cite

AimThe purpose of the study was to investigate seasonal variations in HbA1c, GA and LDL-C and to examine the effects of the COVID-19 pandemic on these variations and on glycemic and lipid control themselves in patients with type 2 diabetes. Patients and methodsThe subjects were outpatients with type 2 diabetes who had received standard treatment for glycemic control for more than 3 years. Data for patients who visited our hospital from January 2021 to March 2021 were retrospectively investigated based on electronic medical records. Results HbA1c showed seasonal variation (high in winter-spring and low in summer-autumn), and this was similar during the COVID-19 pandemic. However, the mean HbA1c over 1 year was significantly elevated during the COVID-19 pandemic (7.53 ± 1.02% in 2020) compared with the previous 2 years: (7.

show abstract

Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Seasonal variations and the influence of COVID-19 pandemic on hemoglobin A1c, glycoalbumin, and low-density lipoprotein cholesterol

et al. 2022

View full text Add to dashboard Cite

show abstract

“…This better glycemic control in summer and autumn than in winter may have been due to the seasonal decline reported in many DM patients. Possible factors for seasonal variation include increased an caloric intake and decreased physical activity in winter and endogenous biological rhythms ( 24 - 26 ). However, there was no seasonal decline in HbA1c in 2020, and in fact, the HbA1c value increased during and after the state of emergency ( Fig.…”

Section: Discussionmentioning

confidence: 99%

Impact of the COVID-19 Pandemic on Glycemic Control and Blood Pressure Control in Patients with Diabetes in Japan

et al. 2022

View full text Add to dashboard Cite

Objective In this study, we investigated whether and how the COVID-19 pandemic affected glycemic control and blood pressure (BP) control in patients with diabetes mellitus (DM). Methods DM patients whose HbA1c level was measured regularly before and after the declaration of a state of emergency were included in this study. Some patients were given questionnaires about changes in their lifestyle to determine the factors affecting glycemic control and BP control. ResultsThe median HbA1c level of the 804 patients increased significantly from 6.8% before the state of emergency to 7.1% and 7.0% during and after the state of emergency, respectively. This was in contrast to the decrease one year earlier due to seasonal variations. In the 176 patients who responded to the questionnaire, the HbA1c level also increased significantly during and after the state of emergency. The worsening of glycemic control was more pronounced in the group that had achieved HbA1c of <7% before the state of emergency than in those with higher values. Unlike the rise in HbA1c, the BP did not rise during the state of emergency but did rise significantly afterwards. There was no marked decrease in HbA1c or BP after the state of emergency, even in patients who responded that they were much more careful with their diet, ate less, or exercised more. Conclusions The COVID-19 pandemic worsened glycemic control and BP control, even in patients who perceived no marked change in their diet or exercise, suggesting that more active lifestyle guidance is necessary for good treatment of DM patients.

show abstract

“…Likewise, when ambient temperature is low, the body will want to generate heat and thus increase the rate of metabolism. Studies in this area of research have yielded conflicting results, with many studies finding that HbA1c levels are higher in the winter months and lower in summer months ( Gikas et al, 2009 ; Higgins et al, 2009 ; Hou et al, 2017 ; Pereira et al, 2015 ; Sakura et al, 2010 ; Shen et al, 2019 ), but also many that found positive correlations between ambient temperature and HbA1c and higher HbA1c levels in the spring ( Alghamdi et al, 2020 ; Kim et al, 2014 ; Raphael et al, 2021 ). Regardless of the direction of association, glucose levels would be affected by these changes.…”

Section: Discussionmentioning

confidence: 99%

Intermediate- and long-term associations between air pollution and ambient temperature and glycated hemoglobin levels in women of child bearing age

Kloog

Just

et al. 2022

Environment International

View full text Add to dashboard Cite

Seasonal variations in HbA1c among type 2 diabetes patients on a semi-arid climate between the years 2005–2015

Cited by 10 publications

References 17 publications

Seasonal variations and the influence of COVID-19 pandemic on hemoglobin A1c, glycoalbumin, and low-density lipoprotein cholesterol

Seasonal variations and the influence of COVID-19 pandemic on hemoglobin A1c, glycoalbumin, and low-density lipoprotein cholesterol

Impact of the COVID-19 Pandemic on Glycemic Control and Blood Pressure Control in Patients with Diabetes in Japan

Intermediate- and long-term associations between air pollution and ambient temperature and glycated hemoglobin levels in women of child bearing age

Contact Info

Product

Resources

About