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Mahrokh Dolatian
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Background: Prediabetes can predispose the individual to type 2 diabetes in the long-term. The present study was conducted to determine the effectiveness of vitamin D and omega-3 co-supplementation on glycemic control and serum lipid profiles in women of reproductive age with prediabetes and hypovitaminosis D.
Methods: The present factorial, triple-blind, clinical trial was conducted on 168 women of reproductive age with prediabetes and hypovitaminosis D. The participants were assigned to four groups based on block randomization method: the placebo group received omega-3 and vitamin D placebos; the omega-3 group took omega-3 supplements and vitamin D placebos; the vitamin D group received omega-3 placebos and vitamin D supplements and the co-supplementation group. The groups received every two weeks 50,000 IU pearls of vitamin D and twice-daily doses of 1000-mg omega-3 tablets or placebos for eight weeks. Dietary intake, physical activity, anthropometric indices and blood biochemical tests were measured at the beginning and end of the study. Analysis was performed using two-way mixed ANOVA.
Results: A significant reduction was observed in fasting glucose, insulin , homeostasis model assessment-beta cell function, weight and waist circumference in the co-supplementation group compared to the other three groups (P<0.05). Moreover, high-density lipoprotein-cholesterol levels increased significantly in the co-supplementation group compared to the other three groups (P<0.05). Despite the fact that homeostasis model assessment-insulin resistance, total cholesterol, triglyceride and low-density lipoprotein-cholesterol levels decreased after intervention in the co-supplementation group, there was no significant difference between the groups in these outcomes.
Conclusion: Vitamin D and omega-3 co-supplementation improved fasting serum glucose, insulin, high-density lipoprotein-cholesterol level, homeostasis model assessment-beta cell function, weight and waist circumference in women of reproductive age with prediabetes and hypovitaminosis D. This co-supplementation can therefore be recommended for glycemic control in these women.
Trial registration: Iranian Registry of Clinical Trials Code: IRCT20100130003226N17. Registered on 9 Feb. 2019.
Keywords
Vitamin D, Omega-3 Fatty Acids, LDL-C, HDL-C, Insulin Resistance, Pre-Diabetic State, Type 2 Diabetes Mellitus
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CURRENT STATUS: Under Review
Version 2
Posted 13 May, 2020
No community comments so far
Review #1 received
Received 02 May, 2020
Review #2 received
Received 02 May, 2020
Reviewers invited
Invitations sent on 30 Apr, 2020
Reviewer #1 agreed
On 30 Apr, 2020
Reviewer #2 agreed
On 30 Apr, 2020
Editor assigned
On 29 Apr, 2020
Submission checks complete
On 28 Apr, 2020
Editor invited
On 28 Apr, 2020
No comments provided
Editorial decision: Minor revision
On 21 Apr, 2020
Review #2 received
Received 20 Apr, 2020
Reviewer #2 agreed
On 18 Apr, 2020
Review #1 received
Received 15 Apr, 2020
Reviewers invited
Invitations sent on 14 Apr, 2020
Reviewer #1 agreed
On 14 Apr, 2020
Editor assigned
On 13 Apr, 2020
Submission checks complete
On 12 Apr, 2020
Editor invited
On 12 Apr, 2020
First submitted
On 11 Apr, 2020
Metrics
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PDF Downloads: ...
HTML Views: ...
Subject Areas
Endocrinology & Metabolism
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This preprint is under consideration at Diabetology & Metabolic Syndrome. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research
Mahrokh Dolatian
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Review
Version 2
Posted 13 May, 2020
No community comments so far
Review #1 received
Received 02 May, 2020
Review #2 received
Received 02 May, 2020
Reviewers invited
Invitations sent on 30 Apr, 2020
Reviewer #1 agreed
On 30 Apr, 2020
Reviewer #2 agreed
On 30 Apr, 2020
Editor assigned
On 29 Apr, 2020
Submission checks complete
On 28 Apr, 2020
Editor invited
On 28 Apr, 2020
No comments provided
Editorial decision: Minor revision
On 21 Apr, 2020
Review #2 received
Received 20 Apr, 2020
Reviewer #2 agreed
On 18 Apr, 2020
Review #1 received
Received 15 Apr, 2020
Reviewers invited
Invitations sent on 14 Apr, 2020
Reviewer #1 agreed
On 14 Apr, 2020
Editor assigned
On 13 Apr, 2020
Submission checks complete
On 12 Apr, 2020
Editor invited
On 12 Apr, 2020
First submitted
On 11 Apr, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Endocrinology & Metabolism
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background: Prediabetes can predispose the individual to type 2 diabetes in the long-term. The present study was conducted to determine the effectiveness of vitamin D and omega-3 co-supplementation on glycemic control and serum lipid profiles in women of reproductive age with prediabetes and hypovitaminosis D.
Methods: The present factorial, triple-blind, clinical trial was conducted on 168 women of reproductive age with prediabetes and hypovitaminosis D. The participants were assigned to four groups based on block randomization method: the placebo group received omega-3 and vitamin D placebos; the omega-3 group took omega-3 supplements and vitamin D placebos; the vitamin D group received omega-3 placebos and vitamin D supplements and the co-supplementation group. The groups received every two weeks 50,000 IU pearls of vitamin D and twice-daily doses of 1000-mg omega-3 tablets or placebos for eight weeks. Dietary intake, physical activity, anthropometric indices and blood biochemical tests were measured at the beginning and end of the study. Analysis was performed using two-way mixed ANOVA.
Results: A significant reduction was observed in fasting glucose, insulin , homeostasis model assessment-beta cell function, weight and waist circumference in the co-supplementation group compared to the other three groups (P<0.05). Moreover, high-density lipoprotein-cholesterol levels increased significantly in the co-supplementation group compared to the other three groups (P<0.05). Despite the fact that homeostasis model assessment-insulin resistance, total cholesterol, triglyceride and low-density lipoprotein-cholesterol levels decreased after intervention in the co-supplementation group, there was no significant difference between the groups in these outcomes.
Conclusion: Vitamin D and omega-3 co-supplementation improved fasting serum glucose, insulin, high-density lipoprotein-cholesterol level, homeostasis model assessment-beta cell function, weight and waist circumference in women of reproductive age with prediabetes and hypovitaminosis D. This co-supplementation can therefore be recommended for glycemic control in these women.
Trial registration: Iranian Registry of Clinical Trials Code: IRCT20100130003226N17. Registered on 9 Feb. 2019.
Figure 1
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