Women are born with a limited number of eggs and do not produce new ones throughout their lives. There is a gradual decline in the quality and quantity of the eggs over time, with the decline becoming more pronounced after the age of 35. From the age of forty onwards, a high percentage of the eggs present alterations in quality, which explains the greater difficulty in achieving a pregnancy and the greater risk of abortion. In women over 40, the assisted reproduction treatment with the highest success rate is egg donation. However, each case must be individualized, and in women with good ovarian reserve and no other infertility factors besides age, there is also a good chance of success with an in vitro fertilization with their own eggs.
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