Unexplained fertility problems Your doctor may diagnose an unexplained fertility problem if there's no obvious reason for your infertility (meaning all test results are normal). Some experts believe subtle differences in the way the reproductive system works may cause this type of infertility. This can include differences in follicle development, sperm function, or the fertilization process. Experts also theorize that lifestyle factors – such as being significantly underweight or overweight, regularly consuming too much caffeine or alcohol, and smoking – may be contributing factors as well. Fertility Related Issues , Maternal & amp; Child Health Care Centre , Advanced Fertility Care Centre , Ashwini Hospital & amp; Fertility Centre Moondrumavadi , K.Pudur Madurai -07, Low Cost IVF 7 ICSI Centre, Normal Vaginal Delivery (Rs.35000/- including medicines) LSCS (RS.50000/- including medicines)