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GlossaryNeuropeptides

small protein-like molecules that neurons use to communicate

Neuropeptides are small protein-like molecules used by neurons to communicate with each other. They influence a variety of brain functions, including pain perception, reward, food intake, metabolism, reproduction, social behaviors, and learning. In the context of hair and alopecia, neuropeptides can affect hair growth by modulating the activity of hair follicle cells and influencing the local immune response.

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Stress Inhibits Hair Growth in Mice by Inducing Premature Catagen Development and Harmful Perifollicular Inflammatory Events via Neuropeptide Substance P-Dependent Pathways

research Stress Inhibits Hair Growth in Mice by Inducing Premature Catagen Development and Harmful Perifollicular Inflammatory Events via Neuropeptide Substance P-Dependent Pathways

194 citations, March 2003 in “American Journal of Pathology”

Stress stops hair growth in mice by causing early hair growth phase end and harmful inflammation through a specific nerve-related pathway.

Neuronal Plasticity of the Brain-Skin Connection: Stress-Triggered Up-Regulation of Neuropeptides in Dorsal Root Ganglia and Skin via Nerve Growth Factor-Dependent Pathways

research Neuronal Plasticity of the Brain-Skin Connection: Stress-Triggered Up-Regulation of Neuropeptides in Dorsal Root Ganglia and Skin via Nerve Growth Factor-Dependent Pathways

66 citations, July 2007 in “Journal of Molecular Medicine”

Stress increases certain chemicals in the skin and nerves, which might worsen skin conditions.

Recent Advances in Neuropeptide-Related Omics and Gene Editing: Spotlight on NPY and Somatostatin and Their Roles in Growth and Food Intake of Fish

research Recent Advances in Neuropeptide-Related Omics and Gene Editing: Spotlight on NPY and Somatostatin and Their Roles in Growth and Food Intake of Fish

October 2022 in “Frontiers in Endocrinology”

New tools show that in fish, NPY increases feeding and somatostatin decreases it.

research Regulation of Human Hair Growth: Hormones and Neuropeptides

January 2016 in “프로그램북(구 초록집)”

Hormones and neuropeptides affect hair growth, with androgens having opposite effects on beard and scalp hair.

research Lymphocytes, Neuropeptides, And Genes Involved In Alopecia Areata

286 citations, August 2007 in “Journal of Clinical Investigation”

Alopecia areata is an autoimmune disease where T cells attack hair follicles.

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community Peptides that Stop Hair Loss? | In-depth Literature Review Video

in Research/Science 69 upvotes 4 months ago

Peptides like TB500, KPV, GHK-CU, and BPC-157 are overhyped for hair growth with limited proven effectiveness in humans. Combining peptides with delivery methods like iontophoresis and sonophoresis shows promise, but many claims remain unproven.

community Everyone is ignoring that plasma finasteride levels are 100x lower with topical compared to oral.

in Research/Science 120 upvotes 3 months ago

Topical finasteride results in plasma levels 100 times lower than oral finasteride, potentially reducing systemic side effects. Users report similar efficacy with fewer side effects, suggesting a preference for topical application.

community C’est terrible - at my wits end

in Female 442 upvotes 11 months ago

A 29-year-old woman is experiencing gradual hair thinning since age 15, suspects Androgenic Alopecia, and has tried 5% minoxidil with little success. She has purchased various hair loss treatments including minoxidil, dutasteride, finasteride, and spironolactone, but is cautious about starting them due to potential interactions with her ADHD medication.