نتایج جستجو برای: free testosterone

تعداد نتایج: 535827  

Journal: :Clinical science 2002
Peter Mattsson

Female hormones are thought to be of importance in the aetiology of migraine, which is more common in women than in men. Little attention has been paid to androgens. This study investigates the associations between migraine and serum levels of androgens in postmenopausal women not taking oestrogens. A case-control study was carried out among women participating in a mammography screening progra...

Journal: :Fertility and sterility 2002
Henry G Burger

OBJECTIVE To describe the sources, production rates, circulating concentrations, and regulatory mechanisms of the major androgen precursors and androgens in women. DESIGN Review of the major published literature. RESULT(S) Quantitatively, women secrete greater amounts of androgen than of estrogen. The major circulating steroids generally classified as androgens include dehydroepiandrosteron...

2018
Qiu-ming Yao Bin Wang Xiao-fei An Jin-an Zhang Liumei Ding

BACKGROUND Type 2 diabetes is a risk factor for testosterone deficiency and impaired sex steroid status. Some studies also investigated the association of testosterone level with diabetes risk in men, but reported controversial findings. To clarify this issue, we conducted a systematic review and meta-analysis. METHODS PubMed, EMBASE and Web of Science were searched for eligible cohort or nes...

Journal: :European heart journal 2000
A Yildirir G Kabakci I Can B Erbas

AIMS High androgen levels are presumed by many to explain the male predisposition to coronary artery disease. However, natural androgens inhibit male atherosclerosis(1). Our aim was to determine whether levels of androgens differ between men with and without coronary artery disease. METHODS AND RESULTS Ninety male subjects (60 with positive, and 30 with negative coronary angiograms) were recr...

2004
R E Ready J Friedman J Grace H Fernandez

Background: Low testosterone in men with Parkinson’s disease may be associated with non-motor symptoms of the disease, such as apathy. Objective: To determine the association between free serum testosterone level and apathy in elderly men with Parkinson’s disease. Methods: Consecutive non-demented patients (n = 49) and knowledgeable informants (n = 40) participated in the study. Patients and in...

Journal: :Journal of neurology, neurosurgery, and psychiatry 2004
R E Ready J Friedman J Grace H Fernandez

BACKGROUND Low testosterone in men with Parkinson's disease may be associated with non-motor symptoms of the disease, such as apathy. OBJECTIVE To determine the association between free serum testosterone level and apathy in elderly men with Parkinson's disease. METHODS Consecutive non-demented patients (n = 49) and knowledgeable informants (n = 40) participated in the study. Patients and i...

Journal: :Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology 2004
Anne McTiernan Shelley S Tworoger Kumar B Rajan Yutaka Yasui Bess Sorenson Cornelia M Ulrich Jessica Chubak Frank Z Stanczyk Deborah Bowen Melinda L Irwin Rebecca E Rudolph John D Potter Robert S Schwartz

Postmenopausal women with elevated circulating androgen concentrations have an increased risk of developing breast cancer, yet interventions to reduce androgen levels have not been identified. We examined the effects of a 12-month moderate intensity exercise intervention on serum androgens. The study was a randomized clinical trial in 173 sedentary, overweight (body mass index > or = 24.0 kg/m(...

Journal: :Archives of general psychiatry 2008
Osvaldo P Almeida Bu B Yeap Graeme J Hankey Konrad Jamrozik Leon Flicker

CONTEXT Serum concentrations of gonadal hormones have been associated with various measures of well-being, but it is unclear whether their association with mood is confounded by concurrent physical morbidity. OBJECTIVE To determine whether the association between serum testosterone concentration and mood in older men is independent of physical comorbidity. DESIGN Cross-sectional study. SE...

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