I thought it would be good to bring this to the top again and add new information.

Vitamin D and PCOS

PCOS Symptoms
http://www.ovarian-cysts-pcos.com/pcos.html#sec4
Polycystic ovarian syndrome presents a complex and baffling array of symptoms, consisting of some combination of the following symptoms that vary with each individual:
• Multiple ovarian cysts
• Irregular or absent menses
• Infertility
• Acne
• Obesity or inability to lose weight (there’s a lot of evidence on vitamin D’s link to this)
• Excessive body or facial hair (hirsutism)
• Insulin resistance and possibly diabetes (there’s a lot of evidence on vitamin D’s link to this)
• Thinning of scalp hair
• Velvety, hyperpigmented skin folds (acanthosis nigricans)
• High blood pressure (there’s a lot of evidence on vitamin D’s link to this)
• Polycystic ovaries that are 2-5 times larger than healthy ovaries.
• Multiple hormone imbalances, commonly including:
o Androgens (testosterone)
o Cortisol
o Estrogens
o FSH (follicle stimulating hormone)
o Insulin.
o LH (luteinizing hormone)
o progesterone
o Prolactin.
o Thyroid hormones.
Vitamin D is an important factor in estrogen biosynthesis of both female and male gonads.
Kinuta K, Tanaka H, Moriwake T, Aya K, Kato S, Seino Y.
http://www.ncbi.nlm.nih.gov/entrez/...l=pubmed_docsum

Androgen receptor and vitamin D receptor in human ovarian cancer: growth stimulation and inhibition by ligands.
Ahonen MH, Zhuang YH, Aine R, Ylikomi T, Tuohimaa P.
http://www.ncbi.nlm.nih.gov/entrez/...l=pubmed_docsum

The relationship between endogenous oestradiol and vitamin D3 metabolites in serum and follicular fluid during ovarian stimulation for in-vitro fertilization and embryo transfer.
Potashnik G, Lunenfeld E, Levitas E, Itskovitz J, Albutiano S, Yankowitz N, Sonin Y, Levy J, Glezerman M, Shany S.
http://www.ncbi.nlm.nih.gov/entrez/...l=pubmed_docsum

Dietary calcium, vitamin D, and the prevalence of metabolic syndrome in middle-aged and older U.S. women.
Liu S, Song Y, Ford ES, Manson JE, Buring JE, Ridker PM.
http://www.ncbi.nlm.nih.gov/entrez/...earch&DB=pubmed

Evidence for alteration of the vitamin D-endocrine system in obese subjects.
Bell NH, Epstein S, Greene A, Shary J, Oexmann MJ, Shaw S.
http://www.ncbi.nlm.nih.gov/entrez/...l=pubmed_DocSum

Intakes of calcium and vitamin d predict body mass index in the population of Northern Norway.
Kamycheva E, Joakimsen RM, Jorde R.
http://www.ncbi.nlm.nih.gov/entrez/...l=pubmed_DocSum

The effects of light on the human body.
Wurtman RJ.
http://www.ncbi.nlm.nih.gov/entrez/...l=pubmed_docsum

Skin diseases in consequence of endocrine alterations.
Krause W.
http://www.ncbi.nlm.nih.gov/entrez/...l=pubmed_docsum

Acanthosis nigricans associated with insulin resistance : pathophysiology and management.
Hermanns-Le T, Scheen A, Pierard GE.
http://www.ncbi.nlm.nih.gov/entrez/...l=pubmed_docsum

Retinoids and vitamin D analogues: action on nuclear transcription.
Griffiths CE.
http://www.ncbi.nlm.nih.gov/entrez/...l=pubmed_docsum