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No doubt his semen report says it is of poor quality.But improvement can definitely be achieved by taking antioxidants
like & high proteins
& vitamin rich foods.Stop smoking
& drinking if he has habit.you can also go for intrauterine insemination
with his semen to get conceived.Sperm concentration & sperm wash can be done & only active motile sperm can be inseminated .So there are many choices for you.
Wish you good health