Consanguineous marriages

Marriage..but among who...!!!
Lets start with the Muslims,Islam permits marriage between first cousins. The Qur'anic verses enumerate women to whom a Muslim cannot be married; you will find that this list does not include cousins. Therefore, such a marriage is permissible within Muslims.
In Iraq, as in much of the region, nearly half of all married couples are first or second cousins to each other. A 1986 study of 4,500 married hospital patients and staff in Baghdad found that 46% were wed to a first or second cousin, while a smaller 1989 survey found 53% were "consanguineously" married. The most prominent example of an Iraqi first cousin marriage is that of Saddam Hussein and his first wife Sajida.

But the contradictory part of it is,
For eg, according to Article 10: Circumstances where marriage is forbidden of the Vietnam Law
Marriage is forbidden in the following circumstances:
Between people currently married;
Between people who have lost their civil capacity to act;
Between people of the same direct blood line;
between relatives within three generations;
There exists a very clear distinction among different groups of people in the society but about a one common thing.
Okay, now why do people go for consanguineous marriages? Here are a few reasons:
The most probable one: When cousins themselves are interested in getting married with each other, parents are left with very little choice.
Second one being, people feel that they can retain their property within their families
Can avoid large amounts of dowry
The boy or the girl is well known to the family and there is no feeling of an outsider coming in to one’s family and many more.

Now what are the effects of such marriages?????
The child born to the first level or the second level cousins carry over a lot of genetic diseases and are prone to be born mentally retarded.
Researchers in Europe and America have realized what a gold mine the Pakistani population is - for identifying the basis of many genetic diseases. Thalessemia, a disorder of hemoglobin production and anemia is the most common one (approximately 1 in 25 individuals in Pakistan carries this gene), but just a cursory search of recent literature identified a laundry list of exotic sounding diseases.
What I have mentioned about the effect of such marriages on children is quite true. Hereditary points of weakness in a family tend to be more pronounced in the children of any marriage between cousins of that family and that this is not totally a new discovery. It is needless to say that when marriage of cousins is repeated over several generations, they are bound to have more effects on children.
American society is so biased against inbreeding that many Americans have a hard time even conceiving of marrying a cousin. Yet, arranged matches between first cousins (especially between the children of brothers) are considered the ideal throughout much of a broad expanse from North Africa through West Asia and into Pakistan and India.
Why is there such bias prevailing in this society? One says marrying one’s cousin brother or cousin sister is legal while the other says marrying a cousin (ie. brother’s sister’s children or vice versa) is lawful and one completely disagrees with the very thought of marriages within one’s family.
Now why there is no enough awareness about consanguineous marriages? Is it the government or the Law makers who are to be blamed, for not bringing things to light or is it people’s custom that has let them carry over such imprudent traditions.
It’s not about a girl and a guy marrying, it’s about what happens next. The child which is born carry’s a lot of genetic disorder and its life is in a toss…Survey indicates that at least one in every fifty newborns has a major congenital anomaly, one in hundred has a monogenic disorder and one in two hundred has a chromosomal abnormality and number seems to be rising, and there is no end to this universal confusion the society or the people in the society have…!!!