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).
Sudan is recovering from a 40-year civil war between the Khartoum based central government and non-Muslim separatist groups from the South, at the time when South Sudan was still part of Sudan. Relations between the two countries after the independence of South Sudan remain fluid and somewhat tense.