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Does Fertility Decrease with Age?

Does Fertility Decrease with Age?


Fertility DOES decrease with age.

More Info: Fertility declines with age for both men and women.  According to a study published in The Journal of Human Reproduction, women age 19-26 had the greatest probability of becoming pregnant, statistically twice as likely as the 35-39 age groups. For the men chances of becoming pregnant began to decline substantially for those over the age of 35.

The study ultimately concluded that a woman’s fertility begins to decline in the late twenties with a substantial decline over age 35. For men, fertility begins to decline in their late 30’s.

It’s All Relative

Though advancing age does indicate that it may take longer to become pregnant, the statistics are relative to the individual.  Fertility levels vary greatly between individuals and your partner’s fertility and age will factor into the equation.

The study results concluded that the majority of pregnancies, regardless the age of the participants, resulted within the six-day fertile window that occurs prior to ovulation, and that the fertile window does not decline with age.



“Infertility, Pregnancy, and Childbirth — The Family Health Guide.” Health Information and Medical Information – Harvard Health Publications. N.p., n.d. Web. 10 Sept. 2010.

Dunson, David B, Bernado Colombo, and Donna D Baird. “Changes with age in the level and duration of fertility in the menstrual cycle.” Journal of Human Reproduction 17.5 (2002): 1399-1403. Print.

Gilles, Duncan , Dr Virpi Lummaa , and Dr Andrew Russell. “Marriage patterns drive fertility decline .” The University of Sheffield. N.p., 21 July 2010. Web. 10 Sept. 2010.

“Male fertility problems.” – The UK’s leading independent health website. N.p., n.d. Web. 10 Sept. 2010. <>.


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