A woman loses a certain number of eggs each month, reaching a small number at age 40 that may prevent her from becoming pregnant. How many eggs are there in the stock when you're forty? How is it measured?
The term "ovarian reserve" refers to the number of eggs still present in the ovaries. Since each female is born with a certain number of eggs, the number gradually decreases until the woman reaches menopause and stops ovulating.
How much egg stock at the age of forty?
In actuality, there isn't a single response to this query. All women at the age of forty have a different amount of eggs in reserve because of a variety of factors. Women who smoke, for instance, have fewer eggs than women who don't smoke, but generally speaking, they have Most women have around 5,000-10,000 eggs by the age of 40.
Before the female is born, specifically when she is a foetus at the age of six months, the stock of ovaries is at its peak and is approximately six million eggs. It then declines to one or two million eggs at birth, and then this stock starts to decrease due to the female losing about 10,000 eggs per month before puberty, to be between 300,000 and 400,000 eggs at the age of puberty.
Following puberty, the female then starts to lose 1000 eggs per month, bringing the stock to 120,000 at the beginning of her thirties and to 25,000 at age 37.
At the age of forty, the number of remaining eggs is very low, and it will remain decreasing until the woman reaches menopause , that is, between the ages of 45-55 years. As a result, studies have shown that women's chances of becoming pregnant at age 40 are less than 5%.
Factors affecting the egg stock at the age of forty
The number of eggs a woman has at age forty depends on a variety of factors, with the following conditions having a greater impact than others:
- Endometriosis .
- Previous ovarian surgery.
- menstrual infection
- Exposure to chemotherapy or radiation.
- smoking.
- Autoimmune disorders.
- either the mumps or genetic disorders like fragile X syndrome.
Oocyte quality at the age of 40
Age is the most significant factor in determining the quality of eggs. After the age of forty, the quality of eggs becomes increasingly important for pregnancy as the quantity, quality, and quality of eggs all decline with age. The older a woman is, the higher the percentage of genetically abnormal eggs that she will produce.
As a result, there is a higher chance that the chromosomes in the eggs will be abnormal. This makes the eggs more prone to mistakes during the division process.
Although all women, even those in their twenties, have some genetically abnormal eggs, the percentage of these eggs rises from the age of 35 to the mid-forties. About 40% of the eggs are genetically normal at age 40, and between 10% and 20% are genetically normal by age 44.
How is the egg stock measured?
At age 40 or at any other age, a number of tests can be performed to assess the egg stock, including:
The quantity of invasive follicles.
The visible follicles are counted by the doctor using ultrasound. This test gives the total number of eggs a woman has and the number of eggs that can be frozen per cycle.
2. Anti-Müllerian Hormone Test
A protein hormone called anti-Müllerian hormone is created by particular follicular cells. Healthcare experts can determine how many follicles are present in an ovary by looking at the level of MH-H in the blood. This gives an idea of the total number of eggs.