div]:bg-bg-000/50 [&_pre>div]:border-0.5 [&_pre>div]:border-border-400 [&_.ignore-pre-bg>div]:bg-transparent [&_.standard-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-2 [&_.standard-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8 [&_.progressive-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-2 [&_.progressive-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8"> _*]:min-w-0 gap-3 standard-markdown">

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 div]:bg-bg-000/50 [&_pre>div]:border-0.5 [&_pre>div]:border-border-400 [&_.ignore-pre-bg>div]:bg-transparent [&_.standard-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-2 [&_.standard-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8 [&_.progressive-markdown_:is(p,blockquote,h1,h2,h3,h4,h5,h6)]:pl-2 [&_.progressive-markdown_:is(p,blockquote,ul,ol,h1,h2,h3,h4,h5,h6)]:pr-8"> _*]:min-w-0 gap-3 standard-markdown">

• 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