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March 2017 in “Journal of The European Academy of Dermatology and Venereology” Finasteride use linked to increased risk of sexual dysfunction, especially in younger people.
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February 2019 in “The journal of immunology/The Journal of immunology” Short-chain fatty acids from *Cutibacterium acnes* cause skin inflammation, contributing to acne.
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January 2011 in “Annals of Dermatology” ALA-photodynamic therapy helps reduce acne by causing acne cell death and lowering certain skin protein levels.
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December 2014 in “PubMed” Finasteride, a hair loss drug, may cause sexual dysfunction and depression, but these effects are usually temporary and the drug is generally safe. More research is needed.
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September 2021 in “Journal of Neuroendocrinology” Neurosteroids can influence behavior by modulating brain inhibition, with potential for treating psychiatric disorders.
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August 2006 in “Laboratory Investigation” SCF and ET-1 together significantly increase skin pigmentation and melanin production.
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June 2006 in “Physiology & Behavior” Finasteride slows down motherly behavior in first-time pregnant rats.
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February 2019 in “Scientific reports” A brain-produced steroid causes increased scratching in mice with a skin condition similar to eczema.
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March 2017 in “Reproductive Biology and Endocrinology” Women with PCOS have higher 5α-reductase activity, which may be linked to insulin resistance.
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Finasteride may help reduce COVID-19 infection by altering a key gene.
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September 2018 in “Neurobiology of Disease” Finasteride and dutasteride reduce unwanted movements from Parkinson's disease treatment by normalizing certain brain signals.
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May 2021 in “JAMA Dermatology” Finasteride use may be linked to hair loss, depression, anxiety, and suicidal thoughts.
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January 2014 in “PubMed” Certain substances can decrease or increase exploratory behavior in rodents.
December 2023 in “Frontiers in pharmacology” Progesterone initially worsens but later reduces neuropathic pain in mice, through different mechanisms.
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February 2022 in “Brain Research Bulletin” Finasteride may help reduce impulsivity caused by pramipexole.
April 2011 in “Cancer Research” 20(S)-Protopanaxadiol-aglycone may help prevent and treat prostate cancer by reducing androgen receptor activity.
June 2020 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Stress causes hair graying by overactivating nerves that deplete color-giving stem cells.
April 2024 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” Retinoic acid helps activate hair growth in people with common hair loss by working on a specific cell growth pathway.
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July 2022 in “Science Immunology” TREM2 macrophages and unsaturated lipids contribute to acne inflammation.
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December 2019 in “Neurobiology of Stress” Neuroactive steroids show promise for treating mental and neurological disorders by targeting GABA_A receptors.
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February 2017 in “International journal of developmental neuroscience” Female guinea pigs exposed to less allopregnanolone before birth showed more anxiety-like behavior.