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Hair loss can be a key sign of a rare type of rickets when vitamin D treatment doesn't work and advanced tests aren't available.

Mice without the vitamin D receptor gene lose hair due to disrupted hair follicle cycles.

The vitamin D receptor helps maintain hair and bone health even without binding vitamin D.

Some people have genetic mutations that make them resistant to vitamin D, leading to rickets even with enough vitamin D intake.

A boy with alopecia regrew hair using a vitamin D cream after other treatments failed.

The vitamin D receptor helps regulate skin and hair health independently of its usual vitamin D ligand.

The vitamin D receptor can act without its usual activating molecule, affecting hair growth and skin cancer, but its full range of actions is not well understood.

The document concludes that understanding hair follicle biology can lead to better hair loss treatments.

A man with skin and hair symptoms improved partially with specific treatment.

The virus was not found in the semen and urine of a man who tested positive for COVID-19.

Finasteride improves hair growth and reduces hirsutism in women, but side effects and optimal dosages need further research.

Both topical calcipotriol and narrowband UVB improved alopecia, but combining them didn't enhance the effect on hair loss severity, despite higher vitamin D3 levels.

Finasteride improves chronic pelvic pain, saw palmetto doesn't.

Cholesterol-related compounds can stop hair growth and cause inflammation in a type of scarring hair loss.

Interferons are effective for some skin conditions and cancers, but can have side effects and need more research for optimal use.

Surface and internal treatments can help prevent hair lipid loss during washing.

Analog 23 is a promising compound for prostate cancer treatment.

Lipocalin-Type Prostaglandin D2 Synthase (L-PGDS) is a protein that plays many roles in the body, including sleep regulation, pain management, food intake, and protection against harmful substances. It also affects fat metabolism, glucose intolerance, cell maturation, and is involved in various diseases like diabetes, cancer, and arthritis. It can influence sex organ development and embryonic cell differentiation, and its levels can be used as a diagnostic marker for certain conditions.

Lack of Ctip2 in skin cells delays wound healing and disrupts hair follicle stem cell markers in mice.

Camellia japonica extract may improve scalp health and promote hair growth.

Mouse genital development depends on male or female hormones for specific features.

Finasteride may help reduce anxiety and depression in elderly but might cause depression in young men.

Estrogen deficiency can reduce the enzyme activity needed to activate vitamin D.

A child with a rare vitamin D-resistant condition improved with treatment.

The document explains how to make a compound called 3.BETA.-Benzoyloxy-4-pregnen-16.ALPHA.,17.ALPHA.-epoxy-6,20-dione and describes its crystal structure.

A boy's hair loss and bone issues improved with specific vitamin D treatment and calcium.

The research found that compound 6, a newly created steroid, is more effective at inhibiting 5α-reductase (an enzyme) than current treatments, suggesting it could be a better option for treating urinary tract symptoms in men.

Lithocholic acid helps hair growth and regeneration in alopecia by activating vitamin D receptors.

Vitamin D can reduce skin inflammation caused by UV rays by enhancing cell "fitness" and skin repair.

Testosterone undecanoate safely and effectively increased penis size in male children with 5-alpha-reductase deficiency.