September 2023 in “The Journal of Dermatology” Bariatric surgery improved many skin conditions in obese patients but caused hair loss in some and decreased facial oil and skin elasticity.
August 2023 in “The American Journal of the Medical Sciences” Men with male pattern baldness have higher uric acid levels, which can decrease with finasteride treatment.
October 2022 in “Frontiers in Endocrinology” New tools show that in fish, NPY increases feeding and somatostatin decreases it.
June 2022 in “Journal of the turkish academy of dermatology” During the COVID-19 pandemic, some skin conditions became more common while others decreased.
Some drugs may increase the risk of obstructive sleep apnea, while others like certain biologics might decrease it.
April 2018 in “The journal of investigative dermatology/Journal of investigative dermatology” Interest in acne is rising, but research funding has significantly decreased.
December 2014 in “Bali Medical Journal” Females have higher estrogen receptor levels in hair than males, and these levels decrease in white hair compared to black hair.
96 citations
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April 2007 in “Journal of Investigative Dermatology” Grafted rodent and human cells can regenerate hair follicles, but efficiency decreases with age.
21 citations
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March 2017 in “Skin research and technology” Removing external lipids from hair reduces moisture and increases strength, while removing internal lipids decreases water permeability.
8 citations
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April 1991 in “European journal of endocrinology” 3α-AdiolG is a good marker for androgen activity in women with excessive hair growth and decreases with anti-androgen treatment.
4 citations
,
January 2010 in “Korean Journal of Family Medicine” Breast cancer patients have lower hair zinc levels, which strongly decrease as BMI increases.
3 citations
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June 2024 in “Skin Research and Technology” Higher LDL lipids may increase alopecia areata risk, while higher triglycerides may decrease it.
August 2025 in “Al-Iraqia Medical College Journal” Virus infection risk is linked to heat tolerance and size, but decreases with high humidity and mutation rates.
Activin A increases inner ear hair cell development, while follistatin decreases it.
January 2022 in “Advanced Pharmaceutical Bulletin” Clove oil and grape seed extract increase finasteride skin absorption, while urea decreases it.
157 citations
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June 2015 in “Psychoneuroendocrinology” Hair cortisol and cortisone levels increase with age, are higher in diabetics, vary by gender, decrease with frequent hair washing, and are lower in winter.
116 citations
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December 2013 in “The Journal of Pediatrics” Most youth with gender dysphoria received hormones, had minor complications, and showed a decrease in suicide attempts after treatment.
88 citations
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May 2005 in “Journal of Dermatological Science” Versican, a protein, is less present in thinning hair follicles and this decrease might contribute to common hair loss in men.
71 citations
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August 2019 in “The journal of sexual medicine” Testosterone treatment effectively causes male physical development in transgender male adolescents but may lead to side effects like acne, higher BMI and blood pressure, lower good cholesterol, and decreased bone density.
35 citations
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August 2021 in “npj Regenerative Medicine” Fibroblasts, cells usually linked to tissue repair, also help regenerate various organs and their ability decreases with age. Turning adult fibroblasts back to a younger state could be a new treatment approach.
34 citations
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July 2020 in “Dermatologic Therapy” Searches for acne, hair loss, and eczema increased during COVID-19, while searches for other skin issues decreased.
25 citations
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July 2017 in “Journal of Stomatology, Oral and Maxillofacial Surgery” PRP injections help regrow hair, reduce hair loss, and increase hair thickness, but effects decrease without ongoing treatment.
11 citations
,
July 2022 in “Frontiers in immunology” Cases of alopecia areata and its impact on life quality rose globally, but when adjusted for age, the rates decreased, especially in poorer regions.
10 citations
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May 2019 in “Archives of Plastic Surgery” Follicular unit extraction (FUE) causes less postoperative pain than follicular unit transplantation (FUT), but pain from both methods decreases significantly within two days.
9 citations
,
January 1998 in “Studia Anglica Posnaniensia: international review of English Studies” Wound-induced hair growth may help study regeneration and aging, but it's unclear if this ability decreases with age.
6 citations
,
January 2019 in “Journal of Cutaneous and Aesthetic Surgery” Follicular unit extraction is an effective hair transplant method for advanced baldness with high patient satisfaction, but some experienced decreased density over time.
2 citations
,
August 2020 in “Journal of Cosmetic Dermatology” Higher granulysin levels in the blood are linked to more severe hair loss in alopecia areata patients, and these levels decrease after effective treatment.
2 citations
,
January 2014 in “International Journal of Endocrinology” Women with a certain type of tumor had higher levels of pregnancy hormone and male hormones, which decreased after treatment.
1 citations
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May 2023 in “Jurnal Kedokteran Diponegoro” Chemotherapy for prostate, bladder, and testicular cancer patients commonly causes hair loss, fatigue, and decreased appetite.
1 citations
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July 2022 in “International Journal of Environmental Research and Public Health” In Poland, people search more for certain skin conditions depending on the season, and despite more STD infections, searches for them have decreased, suggesting a need for better sexual education.