B12 and PCOS

Byron's Comments:

An important nutrient lacking in overweight and insulin resistant women who have PCOS.

Study Title:

Obesity and insulin resistance associated with lower plasma vitamin B12 in PCOS

Study Abstract:

Polycystic ovary syndrome (PCOS) shares some or most components of metabolic cardiovascular syndrome, manifested by abdominal obesity, insulin resistance, dyslipidaemia and atherosclerosis. It has been previously demonstrated that folate and vitamin B(12) treatment improved insulin resistance in patients with metabolic syndrome. This study first investigated whether PCOS patients have lower or higher vitamin B(12), folate and homocysteine concentrations when compared with healthy, age and body mass index matched controls, and, then examined associations between vitamin B(12), folate, homocysteine and insulin resistance and obesity in PCOS patients. Homocysteine concentrations and homeostasis model assessment index were higher, whereas concentrations of vitamin B(12) were lower in PCOS patients with insulin resistance compared with those without insulin resistance. Serum vitamin B(12) concentrations were significantly lower in obese PCOS women in comparison with obese control women (P < 0.05). Fasting insulin, insulin resistance and homocysteine are independent determinants of serum vitamin B(12) concentrations in PCOS patients. Insulin resistance, obesity, and elevated homocysteine were associated with lower serum vitamin B(12) concentrations in PCOS patients.

Study Information:

Kaya C, Cengiz SD, Satiroğlu H. Obesity and insulin resistance associated with lower plasma vitamin B12 in PCOS Reprod Biomed Online  2009 September  19(5):721-6.
Ufuk University, Faculty of Medicine, Department of Obstetrics and Gynecology, Ankara, Turkey.




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