What are the common reasons for Miscarrages?

Question

And how early can they occur?

Answer 1

The vast majority of miscarriages occur in the first 13 weeks of pregnancy... some so soon that the mother was not even aware of the pregnancy at all. At least half of these are caused be major genetic defects, and most of these problems have nothing to do with the genes themselves, but just an early error in cell division or the like.

So most miscarriages occur just because of a problem with the DNA of the fetus and not the parents. (In fact, about 95% of all children with genetic problems are miscarried)

Other than that, the other major causes are:
- progesterone deficiency (mom isn't producing enough for some reason; treatable with hormones if discovered soon enough)
- illness in the mother (which infects the child or causes other problems)
- immune reaction to the baby itself (for example, an Rh- mom having an Rh+ child - which is how the + or - in blood type was discovered; also often treatable if discovered)
- abnormality in the uterus (as much as 15% of repeated miscarriages are caused by this; fairly good chances after corrective surgery, but usually requires a miscarriage to discover in the first place).

Not a fun thing to think about. Hope that helps.

Answer 2

When you conceive and a baby is created, it takes half its genes from the sperm and half from the egg that ovulated that month. At the exact time of conception, the cross-over of these genes takes place. Sometimes, for no reason other than bad luck, some information is lost and the pregnancy is destined from that point not to be.
It might be that this lost information is not needed for many weeks, and the pregnancy will continue as normal until that time. When the needed information is not there, it is then that the baby dies and you begin to miscarry. Sometimes when this happens, the miscarriage doesn't happen right away. This is called a 'missed' miscarriage and may not be picked up until some weeks later, following a slight loss of blood or period-type pains.

Another cause might be that the baby did not implant, or bury itself, into the womb lining properly - once again, just due to bad luck.

Answer 3

If the uterus has a blood clot in it, the placenta may attach to the blood clot. I know this because this happened to me. I was 13 weeks pregnant when I had an ultrasound and found out the baby was dead. I had a D&C and they did an autopsy to find out why the child died. My child would have been healthy but the placenta attached to a blood clot that was in my uterus. This is very rare though...they said it would only occur in like 1:1,000,000 pregnancies.

Answer 4

the main subject-loose reason is a genetic abnormality of the fetus, with extra then a million/2 of them happening interior the 1st 8 weeks of being pregnant. it may be impossible for the toddler to stay to tell the tale as a results of those extreme chromosomal abnormalities or beginning defects. remember, those are distinctive then inherited genetic illnesses. those in all probability happen in the process the form of the particular egg or sperm, and are consequently no longer susceptible to happen returned. some miscarriages are led to by potential of a normal hormonal imbalance that interferes with potential of the uterus to assist the growing to be embryo. it extremely is larger knows as luteal section sickness. some miscarriages are additionally led to by potential of a topic with the form of the uterus or cervix. the possibility for miscarriage is larger by potential of: smoking-as much as 50% larger threat, an infection, exposure to pollution (arsenic, lead), dissimilar being pregnant, and poorly controlled diabetes.

Answer 5

a foetus too damaged to survive can abort spontaneously very early - before the mother knows she is pregnant

Answer 6

Alcohol, drugs, smoking

Any time