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Fertility and infertility: Definition and epidemiology
Vander Borght, Mélodie ; Wyns, Christine
Clinical biochemistry, 2018-12, Vol.62, p.2-10
[Periódico revisado por pares]
United States: Elsevier Inc
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Título:
Fertility and infertility: Definition and epidemiology
Autor:
Vander Borght, Mélodie
;
Wyns, Christine
Assuntos:
Animals
;
Epidemiology
;
Evidence-Based Medicine
;
Female
;
Female
infertility
;
Fertility
;
Fertility - physiology
;
Global Health
;
Humans
;
Incidence
;
Infertility,
Female
- diagnosis
;
Infertility,
Female
- epidemiology
;
Infertility,
Female
- etiology
;
Infertility,
Female
- physiopathology
;
Infertility, Male - diagnosis
;
Infertility, Male - epidemiology
;
Infertility, Male - etiology
;
Infertility, Male - physiopathology
;
Male
;
Male infertility
;
Prevalence
;
Risk
;
Severity of Illness Index
;
Terminology as Topic
É parte de:
Clinical biochemistry, 2018-12, Vol.62, p.2-10
Notas:
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-3
content type line 23
ObjectType-Review-1
Descrição:
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 endometrial polyps may play a role in female infertility. Male infertility may be due to testicular and post-testicular deficiencies. Semen decline that has been observed over the years, endocrine disrupting chemicals and consanguinity are other factors that may be involved. •8–12% of reproductive-aged couples worldwide suffer from infertility.•Males contribute to 50% of infertility cases.•The fertility decline in female already starts around 25–30 years.•Some modifiable lifestyle factors can affect fertility.
Editor:
United States: Elsevier Inc
Idioma:
Inglês
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