Yes, fertility preservation does not affect fertility. However, the chances of achieving pregnancy naturally will be reduced over time due to the depletion of the ovarian reserve with age, regardless of whether fertility has been preserved or not.
Therefore, the advantage of fertility preservation is that a pregnancy is possible by assisted reproductive technology if fertility has been previously preserved, even if the ovarian reserve is already compromised.
Because of this, fertility preservation should be done at a young age (especially in the case of women, since age has a more damaging effect on female fertility) or prior to treatment, for example oncological, which is expected to damage fertility (both men and women).
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