Normal Semen Analysis but IVF Still Failing? What Wasn't Tested

Failed IVF with normal sperm? You're not alone, and the answer may be in what wasn't tested.

DNA fragmentation and oxidative stress don't show up on a standard semen analysis. But they can drive fertilization failure, embryo arrest, and poor blastocyst development.

If the male side was cleared after the basic parameters were evaluated, it may not have been fully evaluated.

In this episode, you'll learn:

What a semen analysis actually measures and what it leaves out
Why normal parameters don't always translate to embryo development
How DNA fragmentation and oxidative stress affect fertilization and blastocyst outcomes
The patterns we see in recurrent IVF failure when male factor hasn't been fully assessed
Why embryo development is a shared biological process, not an egg quality issue

I'm Sarah Clark, founder of Fab Fertile and host of Get Pregnant Naturally, a podcast with over 1 million downloads. My team works with couples navigating low AMH and failed IVF, reviewing functional lab results including gut microbiome, food sensitivity, vaginal microbiome, nutrigenomics, HTMA, DUTCH, toxin testing, and bloodwork, alongside nervous system work, to help identify patterns that may not have been considered. We work alongside your medical team, not instead of them.

Not sure what's been fully evaluated? Download the free Embryo Audit Checklist to map your past cycles and labs so you can see what's been looked at and what may have been missed. Access it here

Ready to go deeper? If you want an expert review of your labs, IVF history, and full health picture before your next cycle, this is where we start. Learn more and apply for a Functional Fertility Second Opinion here.

Timestamps

00:00 Why a "normal" semen analysis doesn't rule out male factor
01:00 What a standard semen analysis actually measures: count, motility, morphology
01:45 What semen analysis misses: DNA integrity, oxidative stress, mitochondrial function
02:30 Why couples with "normal" sperm still see embryo arrest and failed IVF
03:00 DNA fragmentation: what it is and why it matters for embryo development
04:00 Oxidative stress drivers: lifestyle, toxins, inflammation and metabolic health
05:15 The 70–80 day sperm lifecycle and why timing matters
06:00 Embryo development is shared biology, not just egg quality
07:15 Environmental and occupational factors impacting sperm health
08:30 When to revisit male testing before another IVF cycle

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