Decreased female fertility
When I was 25 or 30 as its only half a woman's fertile at 35. Normal fertile women in their 30 years average pregnancy rate of 20 percent monthly. She dropped the possibility of 35 to 10 percent and 38 percent to 5 percent per month. This does not mean that a woman of 35 cans no longer children, but it seems that before getting pregnant.
30 women of childbearing age who had their place, the chances are less obvious. This is because healthy eggs run out of stock. Fertility transition between 10 and 15 years, because the number of eggs is less rapid. This point is reached when the number of eggs decreased by about 37 or 25 thousand years as a woman. More than 41 years, the pregnancy rate is so low that most Dutch hospitals now embarking on fertility treatment.
Decreases male fertility
Men are fertile ground for the assumption that they are often forever. This is not true. Increased sperm quality is back. 45, less motile sperm and the volume decreases. In other words, smaller unsprayed. Slight increase in number of abnormal sperm. It seems that the testicles or balls in the tube, but also the production of sperm dry throughout the year.
For men with poor quality seed is an advanced age makes the difference between fertile and less fertile. In addition, many men have trouble Serological sexual desire decreases and increases the risk of impotence.
This is important for those who have sex before marriage, as in some Western countries. Condom use is the best protection against the threat of fertility such as Chlamydia and gonorrhea (a sexually transmitted disease.) Bacterial infections can enter the uterus and fallopian tubes, where they transform into a more serious condition called pelvic inflammatory disease pelvic or pelvic inflammatory disease (PID). Disease that affects one in five women of childbearing age can cause fertility problems
The following physical signs and symptoms are present when a woman is fertile:
1) The vaginal discharge is thick, sticky secretion, a feature that helps facilitate the movement of sperm.
2) There is an increased libido in a woman is fertile.
3) Hot flashes are usually present, as when a woman is fertile.
The researchers focused on a gene called FOXO3a, which controls the activation of the follicle. Normally, the follicles are activated on a staggered schedule, so an ovary containing follicles in different stages of development.
In female mice genetically engineered to lack FoxO3, the follicles are normal at birth but later turned on all at once. This coordinated maturation meant that the genes controlling follicle growth became all at the same time, facilitating the detection of these genes.
The researchers used a method known as expression profiling to identify the active genes. They found 348 genes that were active in the ovaries of mice lacking FoxO3, but not in other tissues, indicating that it could function specifically in follicle growth.