J Am Acad Dermatol. 2013 Oct 31. pii: S0190-9622(13)01031-1. doi: 10.1016/j.jaad.2013.09.036.
Higher body mass index is associated with greater severity of alopecia in men with male-pattern androgenetic alopecia in Taiwan: A cross-sectional study.
Yang CC, Hsieh FN, Lin LY, Hsu CK, Sheu HM, Chen W.
Obesity is a risk factor for multiple health problems, but its association with hair loss in androgenetic alopecia (AGA) remains controversial.
We sought to determine the association between body mass index (BMI) and alopecia severity in men with androgenic alopecia and early-onset AGA.
A cross-sectional study was conducted. The medical charts and photographs of men with a clinical diagnosis of AGA were reviewed.
In all, 189 men were enrolled with a mean age of 30.8 years. In male-pattern AGA, men with severe alopecia had higher BMI than those with mild to moderate alopecia. After multivariate adjustments, the risk for severe alopecia was higher in the overweight or obese subjects with male-pattern AGA. In early-onset male-pattern AGA, the risk for having severe alopecia was also higher in the overweight or obese subjects.
Parameters used to evaluate obesity were limited because of the retrospective nature of the study.
Higher BMI was significantly associated with greater severity of hair loss in men with male-pattern AGA, especially in those with early-onset AGA.
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JAMA Dermatol. 2013 May 22:1-5. doi: 10.1001/jamadermatol.2013.3049. [Epub ahead of print]
Autoimmune, Atopic, and Mental Health Comorbid Conditions Associated With Alopecia Areata in the United States.
Huang KP, Mullangi S, Guo Y, Qureshi AA.
OBJECTIVE To evaluate the prevalence of comorbid conditions among patients with alopecia areata (AA) seen at tertiary care hospitals in Boston, Massachusetts, during an 11-year period. DESIGN Retrospective cross-sectional study. SETTING Tertiary care hospitals in Boston, including Brigham and Women's Hospital and Massachusetts General Hospital. PARTICIPANTS We identified 3568 individuals with AA seen in the Partners health care system in Boston between January 1, 2000, and January 1, 2011. We performed comprehensive searches of the Research Patient Data Repository using International Classification of Diseases, Ninth Revision code 704.01. We randomly selected 350 patients and manually reviewed their medical records to train and validate a novel artificial intelligence program. This program then used natural language processing to review free-text medical records and confirm a diagnosis of AA. To confirm the algorithm, we manually reviewed a subset of records and found 93.9% validity. MAIN OUTCOMES AND MEASURES The prevalence of comorbid conditions was assessed. RESULTS Common comorbid conditions included autoimmune diagnoses (thyroid disease in 14.6%, diabetes mellitus in 11.1%, inflammatory bowel disease in 6.3%, systemic lupus erythematosus in 4.3%, rheumatoid arthritis in 3.9%, and psoriasis and psoriatic arthritis in 2.0%), atopy (allergic rhinitis, asthma, and/or eczema in 38.2% and contact dermatitis and other eczema in 35.9%), and mental health problems (depression or anxiety in 25.5%). We also found high prevalences of hyperlipidemia (24.5%), hypertension (21.9%), and gastroesophageal reflux disease (17.3%). This profile was different from that seen in a comparison psoriasis and psoriatic arthritis group. CONCLUSIONS AND RELEVANCE We found a high prevalence of comorbid conditions among individuals with AA presenting to academic medical centers in Boston. Physicians caring for patients with AA should consider screening for comorbid conditions.
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Adv Nurse Pract. 1999 Apr;7(4):39-42, 83. Hair-raising. The latest news on male-pattern baldness.
The initiating event in balding seems to be an abnormal sensitivity to the male sex hormones. In addition, a multifactorial model is emerging in which hormones affect the hair follicle in a way that causes it to be perceived as a foreign body by the immune system, which then mounts an attack. Several new classes of agents have the potential to treat hair loss. More than 40 U.S. and several hundred foreign patents have been issued for hair-loss treatment agents. As is common in dermatology, no single agent works universally against hair loss, so the treatment process is often one of trial and error.
This is a paper by Dr. Proctor