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Glossary Anagen Hair Ratio

proportion of hair follicles in the active growth phase

The Anagen Hair Ratio refers to the proportion of hair follicles that are in the anagen phase, which is the active growth phase of the hair cycle. A higher anagen hair ratio indicates a greater number of hair follicles are actively growing, which is typically a sign of healthy hair growth. This ratio is often used by dermatologists and trichologists to assess hair health and diagnose conditions like alopecia.

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Research

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research Evaluation of hair growth

July 2008

This review explores the evaluation methods and biological parameters involved in hair growth assessment, highlighting their distinct applications and advantages, but presents no new clinical findings.

research Utility of Horizontal Sections of Scalp Biopsies in Differentiating between Androgenetic Alopecia and Alopecia Areata

3 citations , January 2018 in “Dermatology”

This study found that transverse sections of scalp biopsies, particularly looking at the anagen:non-anagen hair ratio and presence of pigment casts, effectively distinguish alopecia areata from androgenetic alopecia.

research A practical guide for the treatment of dandruff and seborrheic dermatitis

5 citations , March 2004 in “Journal of The American Academy of Dermatology”

This presentation reviews common myths and practical treatment guidance for dandruff and scalp seborrheic dermatitis but does not provide new research findings.

research Experimental models to investigate the efficacy and bioequivalence of low dose topical corticoids

March 2004 in “Journal of The American Academy of Dermatology”

This study found that the vehicle of hydrocortisone impacts its absorption and therapeutic effectiveness, as demonstrated by efficacy tests using UV-erythema and vasoconstriction models.

research Permanent Alopecia After Systemic Chemotherapy: A Clinicopathological Study of 10 Cases

57 citations , March 2011 in “The American Journal of Dermatopathology”

This study found that permanent alopecia can occur after certain chemotherapy treatments and presents as nonscarring hair loss similar to androgenetic alopecia, with specific histological features that could be misdiagnosed without proper clinicopathological correlation.

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Community Join

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community My Theory Of Androgenic Alopecia

16 upvotes 10 months ago

Hair loss is linked to cellular physiology and the IGF-1 to TGF-B1 ratio, not just androgen sensitivity. The theory lacks evidence, while finasteride and minoxidil are effective treatments.

community Creatine Doesn’t Cause Hair Loss: Stop the BS

137 upvotes 11 months ago

Creatine does not cause hair loss, despite many users reporting personal experiences of hair shedding. Scientific evidence shows no link between creatine and increased hair loss or hormone changes.

community 57% increased chance of pattern hair loss independently associated with the consumption of sugary beverages in men (p<0.001) Pt 2

484 upvotes 2 years ago

Sugary beverages increase the risk of pattern hair loss in men by 57%. Treatments discussed include Minoxidil, finasteride, and RU58841.

community Accelerated Hair Loss from Creatine

137 upvotes 10 months ago

Creatine may cause hair loss in some individuals, especially those on finasteride, despite no scientific link. Personal experiences suggest individual sensitivity to DHT could be a factor.

community Microneedling, some people seem to permanently lost their hair. Confused

in Microneedling 35 upvotes 1 year ago

Microneedling can aid hair regrowth but poses risks like permanent hair loss if not done properly. Combining it with minoxidil, finasteride, and tretinoin, while ensuring proper sterilization and technique, is crucial for safety and effectiveness.

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Learn

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learn Caffeine

Does caffeine stimulate hair growth or only slow hair loss? Caffeine stimulates hair follicles in laboratory cultures, and one open-label trial in 210 men found a 0.2% caffeine topical non-inferior to minoxidil 5% on an anagen-ratio endpoint; there is no placebo-controlled evidence that it regrows hair, and none at all in alopecia areata or telogen effluvium.

learn Osteopontin

signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss

learn Overview

learn Beta Polypeptide

learn Thymosin Beta 4

learn Stem Cell Factor

learn Omega 3

Is the omega-3 to omega-6 ratio in your diet feeding your hair problem without you knowing? Nutrition sources describe a lopsided omega-6 to omega-3 intake as pro-inflammatory, but no published human study shows that the dietary ratio changes 5-alpha reductase, scalp DHT or hair loss; the one relevant trial tested a commercial omega-3/6 plus antioxidant supplement in 120 women, not a change in dietary fat ratio.

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