Infertility is defined as the inability of a couple to conceive.
The human species has a low reproductive capacity. The likelihood of a young fertile couple to conceive within one month is around 25-30%, so it takes most couples 2-4 months to get pregnant.
These percentages are not cumulative, and it is estimated that only 85% of all normal couples will achieve pregnancy within one year.
Infertility affects 1 in 5-6 couples in the Western world (about 20%) with an upward trend due to social reasons (eg delaying motherhood).
In addition, there are environmental factors, such as chemicals, detergents, pollutants, etc., that affect fertility.
Approximately 30% of infertility is due to female factors, another 30% is attributed to male factors and about 20% is a combination of both.
In the remaining 20% the cause of infertility is unknown (also knows as idiopathic infertility), although this group is gradually subsiding, thanks to scientific advancement and improved diagnostic tools.