I received news that my husband's sperm dna fragmentation is over 70%. This was a shock to both of us because it was at 20.4% just over a year and a half ago. What could cause such a drastic change? Our RE asked if my husband was using illegal drugs or if there was a huge lifestyle change, but things have pretty much been the same as they've always been.
I'm really hoping that it's a lab error, but I really don't know what to think. What are the possible solutions for this?