From a Chinese medicine perspective, the main cause of male fertility issues fall under two categories. I look for deficiencies in certain areas. I also look for factors which may prevent good blood flow to the pelvic area recognising other pathogenic factors that may cause stagnation, such as damp and heat.
A study conducted by The College Of Shanghai University Of Traditional Chinese Medicine reported that: Acupuncture Treatment was shown to enhance semen quality and the quantity of sperm. Alongside this the spermatogenic environment improved (indicated by a significant decrease of mucosity and liquefaction time). Equally important, it found that the sex hormones were normalised.
When working on male fertility issues I always look at lifestyle, diet and supplements, because so much improvement can be made by implementing changes in just this area alone.