2 doctors weighed in:
Ttc. Does anyone know the signs that could mean that a guy cannot father a child?
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In brief: Several reasons
The best determination for ability to father a child would be to start with sperm evaluation for number produced and motility (movement).
If a male has only 1 testicle the sperm count is lower. If a male has undergone chemotherapy, the sperm count may be lower. If a male has a chromosomal abnormalilty XXY klinefelters syndrome, sperm count may be lower.

In brief: Several reasons
The best determination for ability to father a child would be to start with sperm evaluation for number produced and motility (movement).
If a male has only 1 testicle the sperm count is lower. If a male has undergone chemotherapy, the sperm count may be lower. If a male has a chromosomal abnormalilty XXY klinefelters syndrome, sperm count may be lower.
Dr. Tammi Schlichtemeier
Dr. Tammi Schlichtemeier
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