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Hormones, nutrition, and seasonal changes regulate hair growth cycles, with androgens extending growth phases and factors like aging and malnutrition affecting hair loss and thinning.

Some psychiatric medications can cause reversible hair loss.

Researchers found genes that control hair color and growth change before the visible coat color changes in snowshoe hares.

Sex hormones, especially estradiol, can change chicken feather shapes and colors.

Different ectodermal organs like hair and feathers regenerate differently, with specific stem cells and signals involved in their growth and response to the environment.

Cats with Feline Symmetrical Alopecia can regrow hair with proper treatment based on the specific cause, including diet, medication, or stress management.

Human skin can make serotonin and melatonin, which help protect and maintain it.

The Rotterdam Study found risk factors for elderly diseases, links between lifestyle and genetics with health conditions, and aimed to explore new areas like DNA methylation and sensory input effects on brain function.

Certain proteins, Lgr5 and Lgr6, are important markers of adult stem cells and are involved in tissue repair and cancer development.

The conclusion is that Treg-targeted therapies have potential, but more knowledge of Treg biology is needed for effective treatments, including for cancer.

Prolactin contributes to hair loss by promoting hair follicle shrinkage and cell death.

Foxp3 is crucial for regulatory T cell function, and targeting these cells may help treat immune disorders.

The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.

Prolactin affects hair growth and skin conditions, and could be a target for new skin disease treatments.

Prolactin affects hair growth cycles and can cause early hair follicle regression.

The conclusion is that recognizing hair growth cycles can improve the precision of dietary and health assessments from hair analysis.

New findings explain how genetic changes, body clocks, and certain molecules affect tissue response to stress hormones.

The document concludes that understanding hair and feather regeneration can help develop new regenerative medicine strategies.

Cosmetics enhance beauty, fix defects, and intimidate enemies, with varying cultural standards and alternative methods.

Bleaching hair removes its protective top layer and exposes more hydrophilic groups, changing its chemical surface and affecting how it interacts with products.

Metformin taken during pregnancy increases SHBG in newborns but doesn't change other hormone levels in mothers or babies.

Some herbal extracts, especially when used in cubosomal suspensions, were as effective as Minoxidil in promoting hair growth.

Antler velvet hair and body hair of red deer have different structures that help with protection and insulation.

Young female Australian fur seals are losing hair due to low tyrosine and zinc levels and high pollution exposure.

Environmental and cosmetic factors, including heat, chemicals, and sun exposure, can cause hair loss and damage.

Human skin's melanocytes respond to light by changing shape, producing pigments and hormones, which may affect sleep patterns.

The document concludes that hair loss in cats is caused by various factors, including allergies, mites, infections, and hormonal issues, with treatments varying accordingly.

Hexi cashmere goats' hair growth varies by stage, with Hoxc13 linked to hair activity.

The industry should promote pure luxury hair fibers, improve technology, and diversify products to support growers and ensure sustainable use.

Where a rhesus macaque used to live can affect its chances of getting alopecia later in life, and females are more likely to be affected than males.