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Sample Collecting Methods for Bacterial Community Structure Analysis of Scalp Hair: Non-Invasive Swabbing Versus Intrusive Hair Shaft Cutting

research Sample collecting methods for bacterial community structure analysis of scalp hair: non-invasive swabbing versus intrusive hair shaft cutting

1 citations , September 2024 in “Scientific Reports”

This study observed that bacterial communities on scalp hair collected through non-invasive swabbing showed similar diversity and composition to those obtained by cutting or removing hair, suggesting that swabbing is an effective method for microbiome analysis on hair.

research Collecting Hair Samples for Hair Cortisol Analysis in African Americans

44 citations , June 2018 in “Journal of Visualized Experiments”

This paper presents a culturally informed protocol designed to improve the collection of hair samples from African Americans for cortisol measurement, illustrating its application with community-based study data.

research Critical Factors in Sample Collection and Preparation for Clinical Metabolomics of Underexplored Biological Specimens

January 2024 in “Metabolites”

This review highlights the importance of standardizing pre-analytical procedures for collecting and extracting samples from uncommon biological specimens like breast milk and sweat in clinical metabolomics, to enhance diagnostic and biomarker discovery efforts while minimizing contamination and bias.

research Development and validation of hair specimen collection methods among extremely short‐length Afro‐textured hair

4 citations , February 2019 in “American Journal of Human Biology”

This study suggests that collecting hair samples from all scalp regions may be a viable alternative for measuring cortisol in individuals with Afro-textured or extremely short hair, aligning results with traditional methods.

research Bias in Hair Cortisol Measures for Psychological Stress: Self vs. Professional Collection

January 2026 in “Psychoneuroendocrinology”

Self-collected hair samples can measure stress but may need adjustments for accuracy.

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community Sugar and Hair loss connections

in Research/Science 41 upvotes 1 year ago

High sugar diets may worsen hair loss by increasing 5α-reductase activity and androgen levels, especially in women with PCOS. A low sugar diet might reduce scalp DHT levels, similar to finasteride, but genetics also significantly influence hair loss.

community DHT Itch is real. The connection between Acne and Male Pattern Baldness shows this

in Research/Science 64 upvotes 3 years ago

The conversation discusses the link between seborrheic dermatitis, acne, and male pattern baldness, suggesting that DHT may cause both skin conditions and hair loss. Treatments mentioned include RU58841, finasteride, dutasteride, minoxidil, Nizoral shampoo, and other topical anti-androgens.

community Do you believe these studies are real or just fear mongering

in Finasteride/Dutasteride 157 upvotes 11 months ago

Finasteride can regrow hair but may cause depression and suicidal thoughts in some users. The connection between finasteride and mental health issues is debated, with some attributing it to pre-existing conditions or stress.

community Eliminating scalp itch leads to regrowth (and my RU58841 progress)

63 upvotes 3 years ago

User experienced hair regrowth after eliminating scalp itch with RU58841. Others discussed itch and hair loss connection, and effectiveness of combining RU58841 with 5AR inhibitors.

community Blaming Finasteride doesn't help you solve anything: dry eyes

51 upvotes 1 year ago

Finasteride is debated for causing dry eyes, with some users experiencing relief after stopping it, while others find no connection. Topical treatments like dutasteride and minoxidil are suggested as alternatives, with advice to consult medical professionals.

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Learn

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learn Osteopontin

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

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