Since the beginning of the 21st century, the most common age to become a mother has been between 25 and 29. Having a child at a later age has been increasingly influenced by health and circumstances connected with premature mortality.
Alates 21. sajandi algusest on ema jaoks kõige tavalisem saada laps vanuses 25–29. Lapse saamise vanuse nihkumisel vanemasse ikka hakkavad sündimuskäitumist senisest rohkem mõjutama tervise ja enneaegse suremusega seotud asjaolud.