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Study looked at inflammatory markers in RA.  The authors point to high aromatase activity, low androgens, and elevated estrone in synovial fluid as an indicator of a link between aromatase activity and inflammation production through E1 production.  The authors also point to the 16 alpha metabolite pathway as pro-inflammatory as well.  One very interesting point made by the authors is that vitamin D down regulates aromatase activity.  In addition to NK-kappaB inhibition, this may be another mechanism by which vitamin D reduces inflammation.

low vitamin D levels associated with Hashimoto's thyroiditis.

low vitamin D is not only associated with hypothyroidism; but also the severity of hypothyroidism.  Low calcium is also associated with hypothyroidism.

low vitamin D associated with obesity.  Exact relationship is yet to be determined.

low Vitamin D associated with insulin resistance in women with Lupus.  This was found to be independent of weight.  

Not only is high dose vitamin D3 therapy more effective in reducing IL-17 compared to low dose, but it is safe to in individuals with MS.  The hot topic these days is immunotherapy: that is exactly what vitamin D therapy is.

Good review of the hypertension (different) found in those with thyroid problems, parathyroid problems, and low vitamin D.

Just an association, but low vitamin  D levels found to be associated with decreased cognitive function in older women.  Found in women with levels < 20.

some confounding variables, but low vitamin D associated with increased all-cause mortality.

vitamin D associated with low adiponectin, obesity and insulin resistance in african Americans

low Vitamin D inversely related to mortality rates

Vitamin D deficiency found more prevalent in those children with critical illnesses; and with greater severity of illness.

Men with type II diabetes and hypogonadism have lower vitamin D levels.

normal versus low vitamin D in adolescent girls is found to be associated with increased grip strenght and lower bone turnover with increased bone mass.

low vitamin D associated with increased TPO antibodies.

NFL players with low vitamin D levels have increased risk of muscle injuries.

low vitamin D associated with increased autoimmune thyroid TPO antibodies in women.  This association was found in pre menopause women, but not post menopause women.

low vitamin D associated with an increased odds ratio of elevated blood pressure and elevated triglycerides in post-menopausal women with metabolic syndrome.

low vitamin D levels impair healing following rotator cuff injury in animal model.

low dose vitamin D plus higher dose of calcium reduced stress fractures in female military recruits.