The effect of calcium and vitamin D supplementation on menstrual cycle, body mass index and hyperandrogenism state of women with poly cystic ovarian syndrome

Abstract

Background: Poly cystic ovary syndrome (PCOS) is considered one of the most common endocrine disorders of women in reproductive age. The aim of this study was evaluating the efficacy of calcium and Vitamin D supplementation on the regularity of menstrual cycles, body mass index (BMI) and hyper androgenism state of women with PCOS.

Materials and methods: In this clinical trial, 80 women with PCOS were evaluated. They randomly located in four groups receiving metformin (group 1), metformin plus calcium and Vitamin D (group 2), calcium and Vitamin D (group 3) and placebo (group 4) for 4 months. BMI, regularity of menstrual cycles, hyperandrogenism (hirsutism and acne) and serum calcium and Vitamin D levels were compared in four studying groups at baseline and 4 months after the trial.

Results: All studied subjects were similar at baseline (P > 0.05). After trial, the frequency of hirsutism and acne were not different among groups. Frequency regular menstrual cycle and dominant follicle were significantly higher in group 1 and 2 than others (P < 0.05). After trial, there was no significant difference with respect to BMI among groups.

Conclusion: Vitamin D and calcium supplementation in addition to metformin therapy in women with PCOS could result in a better outcome in a variety of PCOS symptoms including menstrual regularity, and ovulation.

Keywords: Calcium; metformin; poly cystic ovary syndrome; vitamin D.

Figure 1

Consort diagram of the study