633 citations
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September 1998 in “The Journal of Clinical Endocrinology and Metabolism” This study observed that among a cohort of reproductive-aged women in the U.S., the prevalence of PCOS was about 4.0%, with no significant racial differences between White and Black women.
378 citations
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September 1998 in “The Journal of Clinical Endocrinology and Metabolism” This study found that the prevalence of PCOS in a population of unselected U.S. women was 4.0%, with no significant racial differences between White and Black women.
271 citations
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June 2013 in “Human Reproduction” In this study, the prevalence of polycystic ovary syndrome among Han Chinese women aged 19-45 was found to be 5.6%, and PCOS was associated with increased metabolic risks, particularly in obese individuals.
193 citations
,
August 2005 in “Journal of Investigative Dermatology Symposium Proceedings” This study found that the prevalence of androgenetic alopecia increases with age among both men and women in Maryborough, Australia, with 57% of women and 73.5% of men aged 80 and over affected.
141 citations
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March 2011 in “Journal of Dermatology” This study in Japan found varying prevalence of skin disorders, with atopic dermatitis common in children and tinea pedis in the elderly, and observed gender differences in disease susceptibility.
126 citations
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January 2010 in “British Journal of Dermatology” This study found that the prevalence of androgenetic alopecia in Chinese men and women was lower than in Caucasians and similar to that in Koreans.
121 citations
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April 2008 in “European Journal of Obstetrics & Gynecology and Reproductive Biology” In this study, the prevalence of polycystic ovary syndrome in southern China was found to be 2.2%, with affected women showing distinct metabolic and hormonal characteristics compared to others.
118 citations
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February 2009 in “Fertility and Sterility” This study found that approximately 75% of women with PCOS exhibited hyperandrogenemia, with free testosterone being the most frequently elevated marker.
100 citations
,
June 2002 in “Diabetologia” This study found that parents of women with PCOS have a higher prevalence of insulin resistance and Type II diabetes than parents of healthy women.
84 citations
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November 2003 in “European journal of endocrinology” This study found that women with androgenic alopecia had a higher prevalence of polycystic ovarian morphology and higher androgen levels compared to controls, suggesting a strong association with PCO.
77 citations
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March 2004 in “Human Reproduction” This study found that women with symptoms of oligomenorrhoea and/or hirsutism are more likely to have polycystic ovaries and less favorable biochemical and clinical markers compared to asymptomatic women.
70 citations
,
February 2012 in “Human Reproduction” This study found a high prevalence of clinical signs and functional disorders of androgen excess in premenopausal women, with idiopathic hyperandrogenism and idiopathic hirsutism rates similar to PCOS.
66 citations
,
February 2009 in “British Journal of Dermatology” This study found that the prevalence of androgenetic alopecia in Chinese men was lower than in Caucasian men, similar to Korean men, and most commonly presented as type III vertex.
63 citations
,
March 2020 in “Clinical Cosmetic and Investigational Dermatology” This study suggests that the prevalence of alopecia areata in the US remains similar to high estimates from the 1970s, with significant implications for quality of life.
61 citations
,
March 2022 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” This study found that 43.35% of the adult population across 27 European countries reported having a skin condition in the past year, highlighting the need for dermatological care planning.
59 citations
,
July 2023 in “PLoS ONE” This study reveals a high prevalence of multiple sclerosis in Africa, indicating an epidemiological shift in the region and underscoring the need for early prevention and treatment strategies.
53 citations
,
September 2017 in “BMJ Open” This study observed that nearly all aged nursing home residents in Berlin had at least one dermatological condition, with xerosis cutis being the most common, but few associations with demographics or medical characteristics were found.
50 citations
,
December 1998 in “Dermatologic Surgery” In this study, 42% of healthy men aged 18-49 showed moderate to extensive male pattern hair loss, with prevalence increasing significantly with age.
48 citations
,
February 2014 in “Fertility and Sterility” This study found that androgenic alopecia is present in 22% of women with polycystic ovary syndrome and is associated with acne and hirsutism, but not with increased biochemical hyperandrogenemia or metabolic dysfunction beyond PCOS.
45 citations
,
January 2013 in “Journal of Human Reproductive Sciences” In this study, women with PCOS had a higher prevalence of hepatic steatosis compared to controls, with associated metabolic issues like insulin resistance and metabolic syndrome.
44 citations
,
February 2017 in “Journal of the American Academy of Dermatology” This study found that postmenopausal women with lichen planopilaris showed a high prevalence of androgen excess, while women with frontal fibrosing alopecia were often associated with androgen deficiency.
41 citations
,
January 2012 in “Journal of Korean Medical Science” This study found a high prevalence of skin diseases, such as acne and tinea pedis, among Korean military personnel, highlighting their potential impact on soldiers' daily lives.
40 citations
,
September 2024 in “European Journal of Endocrinology” This study found that global PCOS prevalence in adolescents is 6.3% under new 2023 guideline criteria, compared to 9.8% using Rotterdam criteria; excluding PCOM may prevent over-diagnosis, while recognizing irregular cycles or hyperandrogenism helps avoid under-diagnosis by identifying at-risk individuals for further monitoring.
40 citations
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February 2005 in “Fertility and Sterility” This study suggests that although the G972R variant of the IRS1 gene might increase AA excess risk in heterozygous carriers with CYP21 mutations, both variations play a limited role in PCOS development.
37 citations
,
October 2024 in “JAMA Network Open” This study found that among reproductive-age women across India, there was a high prevalence of PCOS, with phenotype C being predominant and most women exhibiting metabolic abnormalities, highlighting the importance of integrating PCOS management into national health strategies.
37 citations
,
January 2004 in “Hormone Research in Paediatrics” In this study, the prevalence of clinical polycystic ovary syndrome among high school girls in Isfahan, Iran was reported at 3%, with a note that hormonal assessments might uncover higher rates.
35 citations
,
November 2022 in “The Journal of Dermatology” This study found that the prevalence of alopecia areata in Japan increased from 2012 to 2019, with allergic diseases as common comorbidities and a need for more effective treatments, particularly for severe and pediatric cases.
35 citations
,
May 2015 in “Arquivos De Gastroenterologia” This study reported that almost 25% of women with PCOS were diagnosed with NAFLD, and 32.7% to 44.6% had metabolic syndrome, with higher prevalence in those with both conditions.
34 citations
,
February 2013 in “The Journal of Clinical Endocrinology and Metabolism” This study estimates the prevalence of hyperandrogenic states in late adolescent and young females, revealing that these disorders often begin at a young age.
31 citations
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October 2015 in “DOAJ (DOAJ: Directory of Open Access Journals)” This meta-analysis found that the prevalence of PCOS among Iranian women varies by diagnostic criteria, with notable rates of associated complications like hirsutism, acne, and menstrual disorders.