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Hair ages due to genetics and environmental factors, leading to graying and thinning, with treatments available for some conditions.

Androgens can both increase body hair and cause scalp hair loss.

Normal hair thickness varies by scalp area and a mix of hair thicknesses is typical in healthy individuals.

A gene called APCDD1, which controls hair growth, is found to be faulty in a type of hair loss called hereditary hypotrichosis simplex.

The conclusion is that androgenetic alopecia and senescent alopecia have unique gene changes, suggesting different causes and potential treatments for these hair loss types.

Certain gene variations in the Vitamin D Receptor are linked to higher risk of female hair loss.

Edelweiss extract can increase hair density and promote hair growth.

Using minoxidil with tocopherol acetate in ethosomes improves hair regrowth in hair loss treatment.

Blocking a protein called CXXC5 with a specific peptide can stimulate hair regrowth and new hair growth in wounds.

The authors suggest that a new type of hair loss exists, which is different from alopecia areata.

LLLT helps treat hair loss by increasing blood flow, reducing inflammation, and stimulating growth factors.

Female pattern hair loss shows similar characteristics in both genders and should be classified by hair loss patterns, not gender.

Increasing the levels of a protein called FGF9 can promote hair growth, but humans may not respond the same way due to a lack of certain cells.

Pilose antler extract helps hair grow in mice with a type of hair loss by speeding up the growth phase.

Terminalia bellirica extract may help promote hair growth and prevent hair loss caused by testosterone.

Caizhixuan hair tonic helps treat hair loss by promoting hair growth and improving hair follicles.

Targeting the PGD2-DP2 pathway may help treat hair loss.

All-trans retinoic acid at high doses harms goat hair growth cells and could be bad for hair growth.

Common latent viruses might contribute to male-pattern baldness by disrupting cell processes that normally suppress hair loss-related proteins.

Hair loss in Androgenetic alopecia (AGA) is due to altered cell sensitivity to hormones, not increased hormone levels. Hair growth periods shorten over time, causing hair to become thinner and shorter. This is linked to miscommunication between cell pathways in hair follicles. There's also a change in gene expression related to blood vessels and cell growth in balding hair follicles. The exact molecular causes of AGA are still unclear.

The Shen Bai Hair Growing Decoction may help treat hair loss by promoting hair growth and reducing inflammation.

Botulinum Toxin A may help with hair growth and has some side effects; more research is needed.

Hair pattern in androgenetic alopecia overlaps with scalp and bone demarcations, with distinct gene profiles affecting susceptibility.

Most patients with chronic hair shedding did not progress to permanent hair loss, and one showed improvement with treatment.

FAPD is a possible diagnosis for hair loss in patients of color and requires multiple evaluations for accurate diagnosis.

Scalp areas that look normal in people with hair loss may still show signs of disease under a microscope.

The dog with an Alopecia Areata-like condition showed signs of an autoimmune disease and partially regrew hair without treatment, suggesting dogs could be models for human AA research.

AGA is a common hair loss affecting both genders, treated with various therapies to promote regrowth and slow thinning.

AGA causes hair loss by shrinking hair follicles due to DHT binding, and can be treated with finasteride and minoxidil.

New imaging techniques show testosterone delays hair growth and shrinks follicles in mice, but have limited depth for viewing.