Fertility and infertility: Definition and epidemiology.

Fertility and infertility: Definition and epidemiology. Clin Biochem. 2018 Mar 16;: Authors: Mélodie VB, Christine W Abstract Infertility is a disease characterized by the failure to establish a clinical pregnancy after 12 months of regular and unprotected sexual intercourse. It is estimated to affect between 8 and 12% of reproductive-aged couples worldwide. Males are found to be solely responsible for 20-30% of infertility cases but contribute to 50% of cases overall. Secondary infertility is the most common form of female infertility around the globe, often due to reproductive tract infections. The three major factors influencing the spontaneous probability of conception are the time of unwanted non-conception, the age of the female partner and the disease-related infertility. The chance of becoming spontaneously pregnant declines with the duration before conception. The fertility decline in female already starts around 25-30 years of age and the median age at last birth is 40-41 years in most studied populations experiencing natural fertility. The disease-related infertility may affect both genders or be specific to one gender. The factors affecting both genders' fertility are hypogonadotrophic hypogonadism, hyperprolactinemia, disorders of ciliary function, cystic fibrosis, infections, systemic diseases and lifestyle related factors/diseases. Premature ovarian insufficiency, polycystic ovary syndrome, endometriosis, uterine fibroids and ...
Source: Clinical Biochemistry - Category: Biochemistry Authors: Tags: Clin Biochem Source Type: research

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Source: Minerva Anestesiologica - Category: Anesthesiology Tags: Minerva Anestesiol Source Type: research
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Source: Academic Pediatrics - Category: Pediatrics Source Type: research
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Source: Clinical Practice and Epidemiology in Mental Health - Category: Psychiatry Tags: Clin Pract Epidemiol Ment Health Source Type: research
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Source: Clinical Practice and Epidemiology in Mental Health - Category: Psychiatry Tags: Clin Pract Epidemiol Ment Health Source Type: research
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Source: Journal of Medical Case Reports - Category: General Medicine Source Type: research
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Source: Journal of Molecular Medicine - Category: Molecular Biology Source Type: research
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