1 In contrast, Preseedâs osmolality matches that of semen and thus does not harm or damage sperm.  Viscosity â The texture of many vaginal lubricants also negatively affect fertility by inhibiting the sperm from traveling up the vagina and through the cervix quickly and efficiently.
The Civil War in Sudan was caused by religious tensions between the North and the South. The two main religions are Sunni Muslim (North) and Christians or other traditional beliefs (south).
As many as 50,000 have died in the two-year conflict, one official says, with violence continuing despite peace deal. Tens of thousands of people have been killed in South Sudan's two-year civil war, the UN said, putting the death toll much higher than estimates by aid groups that operate in the country.