Despite advances in the field of male reproductive health, idiopathic male infertility, in which
a man has altered semen characteristics without an identifiable cause and there is no …

It is predicted that Japan and European Union will soon experience appreciable decreases
in their populations due to persistently low total fertility rates (TFR) below replacement level …

A common definition of sub-and infertility is very important for the appropriate management
of infertility. Subfertility generally describes any form of reduced fertility with prolonged time …

Unexplained male infertility is a diagnosis reserved for men in whom routine semen
analyses results are within normal values and physical as well as endocrine abnormalities …

BACKGROUND: The likelihood of spontaneous conception in subsequent cycles is
important for a balanced management of infertility. Previous studies on time to pregnancy …

Objectives Many female rheumatoid arthritis (RA) patients attempting to conceive have a
time to pregnancy (TTP) of> 12 months. During this period RA often cannot be treated …

Male infertility caused by exposure to environmental toxicants such as cadmium, mercury,
bisphenol A (BPA) and dioxin is a global problem, particularly in industrialized countries …

BACKGROUND Recent studies have shown that both female and male obesity may delay
time-to-pregnancy (TTP). Little is known about central adiposity or weight gain and …

BACKGROUND: In fertile populations, little is known about the association between semen
parameters and time to pregnancy (TTP). METHODS: Pregnant women from Copenhagen …

Objectives To examine whether infertile couples (with a time to pregnancy of> 12 months),
who conceive naturally or after treatment, give birth to children with an increased prevalence …