Search

for
Search:

Glossary Sympathetic Nervous System

prepares the body for "fight or flight" responses during stress

The Sympathetic Nervous System (SNS) is a part of the autonomic nervous system that prepares the body for "fight or flight" responses during stressful situations. It increases heart rate, dilates pupils, and redirects blood flow to muscles, among other functions, to help the body respond quickly to perceived threats.

Related Terms

Sympathetic Nerves

Research

5 / 890 results

research External light activates hair follicle stem cells through eyes via an ipRGC–SCN–sympathetic neural pathway

61 citations , June 2018 in “Proceedings of the National Academy of Sciences of the United States of America”

This study found that light stimulation of intrinsically photosensitive retinal ganglion cells in the eyes can activate hair follicle stem cells through a neural circuit involving the sympathetic nervous system.

research Cholesterol promotes hair growth through activating sympathetic nerves and enhancing the proliferation of hair follicle stem cells

March 2025 in “Molecular Medicine”

This study on C57BL/6 mice found that subcutaneous cholesterol injections significantly promoted hair regeneration by enhancing hair follicle stem cell proliferation, highlighting the role of the PKA-tyrosine hydroxylase-sympathetic nervous system pathway in this process.

research Faculty Opinions recommendation of Hyperactivation of sympathetic nerves drives depletion of melanocyte stem cells.

June 2020 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature”

This abstract provides logistical details about a research study on hair greying in RTX-injected mice but reports no specific findings or results.

research 1298 External light activates hair follicle stem cells through eyes via the ipRGC-SCN-sympathetic neural circuit

April 2018 in “Journal of Investigative Dermatology”

This study found that external light can rapidly activate hair follicle stem cells in animals via a retinal light-sensing pathway linked to the central and autonomic nervous systems.

research Relationship Androgenetic Alopecia with Autonomic Nervous System Activity in 20-39 Year-old Adults

October 2007 in “Journal of Korean Medicine Rehabilitation”

This study found that individuals with androgenetic alopecia exhibited an imbalance in autonomic nervous system activity, characterized by increased sympathetic activity and decreased parasympathetic activity compared to controls.

View more "sympathetic nervous system" in research →

Community Join

5 / 26 results

community After quitting min and fin I asked AI on how fix the mess I am in and it says:

in Technology 1 year ago

Prolonged use of topical minoxidil and finasteride can lead to neuroendocrine and autonomic dysfunction, causing severe sensitivity and side effects. Recovery involves avoiding these treatments, supporting neurosteroid recovery, calming the sympathetic system, and rebuilding scalp health naturally.

community Do you Have Poor Posture? Maybe Contributing to Hair Loss , Esp Diffuse Thinning

in Research/Science 16 upvotes 1 month ago

Correcting posture may improve hair health by enhancing blood circulation and reducing side effects like bloating and sexual issues. The user has been using minoxidil and finasteride for two years with underwhelming results and is exploring posture correction as a potential aid.

community The Real Reason For Hair Loss?

9 months ago

Hair loss is linked to scalp fibrosis and tension, which result from chronic mechanical stress and androgenic signaling. Treatments include blocking androgens with finasteride, promoting hair growth with topical minoxidil, and improving scalp mobility through exercises.

community My progress after 4-5 months of taking meds

414 upvotes 7 months ago

The user experienced positive hair regrowth after 4-5 months using oral minoxidil (10mg) and finasteride (1mg) without side effects. Concerns were raised about the high dosage of minoxidil and potential long-term health risks.

community Physio-metabolic method (antiandrogen, minoxidil, leg training and cold)

in Treatments 309 upvotes 2 years ago

The method combines finasteride, minoxidil, intense leg exercises, and cold exposure to treat androgenetic alopecia. It aims to boost metabolism and reduce androgenic effects, enhancing hair growth.

View more "sympathetic nervous system" in community →

Clinics

6 / 122 results

All 122 clinic results →

Learn

— no results

Experts

— no results

Try a deeper search in experts →