<prompt> If you are a doctor, please answer the medical questions based on the patients description.Age- 36, ht. 62, wt. 180 lbs Question:I have had 2 separate semen analysis completed using the Kruger morpholgy test and botChatDoctore back with 90 abnormal head of sperm. Based on all my research as to risk factors for causes, I dont fit any of the common risk factors, so why do I have such a high of abnormal sperm? What can cause that?  <response>: Good Day, and thank you for being with Chat Doctor ! Stress is the number one cause of your semen abnormality. I would suggest getting a scrotal ultrasound with Doppler to check for varicocele since it is the most common cause of sperm abnormality and is present in 50 of men who are infertile. I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at: .comdoctors Chat Doctor. Best wishes. 