Cousin couple, risk of genetic disorder

[gen236]

I am going to marry my first cousin (daughter of the sister of my mother).
The cousin marriage has been common in mother side the family.

Bother my mother and her sister are from cousins couple (our grand parents). Both of my grand parents were from cousin couples (our grand grand parents). May be also in upper generations.

The positive thing is that both my mother and her mother are married far outside families.

Now how serious is this matter in our marriage decision?

I am very thankful for the help
Regards

[gen236]

the folloing sentence is corrected as follows:

The positive thing is that both my mother and her sister are married far outside families.

[mammo]

It is a myth that marrying relatives is bad.  If Adam and Eve were the first two people on earth, then their children had to marry brothers and sisters to reproduce and populate the world as God told them to do.

[gen236]

An additional question:

Cousin marriages have been common in several generations in our family (grand parents, grand grand parents). Now I am also planned to marry my cousin (daughter of my mother’s sister). The positive thing is that my mother and her sister married out side families (non cousins).  

Question:

Do cousins’ marriages in previous generations have influence (increased the risks) on risks in our marriage?

Generation 1   cousins’ marriages
Generation 2   cousins’ marriages
Generation 3   non cousins’ marriage
Generation 4   cousins’ marriage (planned)