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Pan Afr Med J. 2019 Sep 17;34:38. doi: 10.11604/pamj.2019.34.38.18936. eCollection 2019.

The prevalence of vitamin D deficiency among patients with type 2 diabetes seen at a referral hospital in Kenya.

Author information

1
Kenya Methodist University, School of Medicine, Department of Internal Medicine, Kenya.
2
The University of Nairobi, Department of Clinical Medicine and Therapeutics, Nairobi, Kenya.
3
Kenyatta National Hospital, Department of Medicine, Nairobi, Kenya.
4
Kenya Bureau of Standards, Department of Testing, Kenya.

Abstract

Introduction:

The prevalence of diabetes mellitus is rising at an alarming rate, calling for more insights into its pathogenetic mechanisms, and other factors involved in its progression. The prevalence of vitamin D deficiency is higher in diabetic compared to non-diabetic patients, and is associated with poor glycaemic control. This has not been documented among diabetic patients in Kenya. Aims: to determine the prevalence of hypovitaminosis D among type 2 diabetic patients at Kenyatta National Hospital in Nairobi, Kenya.

Methods:

We recruited type 2 diabetic patients on follow-up at Kenyatta National Hospital. Measurements of height, weight and waist/hip ratios were taken. We drew 6mls of peripheral blood to determine vitamin D, zinc and HbA1c levels.

Results:

A total of 151 participants were recruited, with 69.5% females and mean age of 58.2 years. Hypertension was found in 72.8% of the participants, and obesity in 37.7%. The mean HbA1c levels were 8.46%, and 62.9% had poor glycaemic control. The mean vitamin D level was 31.40ng/ml. Vitamin D deficiency and insufficiency was found in 38.4% and 21.9% of the participants respectively. We found a significant inverse correlation between vitamin D and glycaemic control (r = -0.09, p = 0.044) and vitamin D and BMI (r = - 0.145, p = 0.045).

Conclusion:

In this study population on long-term follow-up for diabetes, there was high prevalence of vitamin D deficiency. This forms a basis for further management of patients with poor glycaemic control. Further studies are needed to document the causal association between poor glycaemic control and vitamin D deficiency.

KEYWORDS:

Vitamin D; diabetes; glycemic control

PMID:
31762905
PMCID:
PMC6859033
DOI:
10.11604/pamj.2019.34.38.18936
[Indexed for MEDLINE]
Free PMC Article

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