Inflammaging and Fertility After 35: How to Lower Oxidative Stress and Support Egg and Sperm Health [EP 59]
If you are over 35 and trying to conceive, you’ve probably been told that fertility declines with age, but the truth is that conversation is often incomplete. Age alone is not the whole story. What matters more is the environment your eggs and sperm are developing in and that environment is shaped by inflammation, oxidative stress, nutrient status, metabolic health, sleep, and stress patterns.
There’s actually a term in research called “inflammaging,” which describes the slow rise in inflammation and oxidative stress as we get older. This process can impact mitochondrial function, hormone signaling, and DNA stability. These are all critical factors for fertility. Here’s the hopeful part: your body is incredibly responsive. When you improve the internal environment, you can support egg quality, sperm health, and overall fertility—at any age.
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“Fertility after 35 is not just about age, it’s about the environment your eggs are developing in.”
What You’ll Learn:
Why age is only one piece of the fertility puzzle and what actually matters more
What “inflammaging” is and how it impacts egg and sperm quality
The most important preconception lab markers to assess inflammation and metabolic health
How mitochondrial function directly affects egg quality and embryo development
The role of CoQ10 and key minerals in supporting reproductive health
Simple nutrition strategies to lower oxidative stress and improve fertility outcomes
Why sleep is one of the most powerful (and overlooked) fertility tools
How strength training supports insulin sensitivity and hormone balance
The connection between stress, nervous system regulation, and fertility
Why “vitamin J” (joy) is a biological—not optional—part of conception
“Inflammation and oxidative stress don’t just affect your health they directly impact egg quality.”
Key Labs to Assess Before Conception:
C-reactive protein (CRP)
Iron panel (ferritin, iron, TIBC)
Prolactin
Thyroid antibodies (TPO, thyroglobulin)
Uric acid
Vitamin B12 and Vitamin D
Testosterone and SHBG
Lipid panel
Homocysteine
Fasting insulin and HOMA-IR
Supplements Mentioned:
CoQ10 (ubiquinol form preferred)
Magnesium
Zinc
Selenium
Copper
Iron (when indicated)
Omega-3 fatty acids (from fish or a high-quality supplement)
Links Mentioned:
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References:
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Liguori I, Russo G, Curcio F, et al. Oxidative stress, aging, and diseases. Clinical Interventions in Aging. 2018;13:757-772. doi:10.2147/CIA.S158513
Agarwal A, Aponte-Mellado A, Premkumar BJ, et al. The effects of oxidative stress on female reproduction. Reproductive Biology and Endocrinology. 2012;10:49. doi:10.1186/1477-7827-10-49
Ruder EH, Hartman TJ, Blumberg J, Goldman MB. Oxidative stress and antioxidants. Exposure and impact on female fertility. Human Reproduction Update. 2008;14(4):345-357. doi:10.1093/humupd/dmn011
Bentov Y, Casper RF. The aging oocyte. Can mitochondrial function be improved? Fertility and Sterility. 2013;99(1):18-22. doi:10.1016/j.fertnstert.2012.11.031
May-Panloup P, Boucret L, Chao de la Barca JM, et al. Ovarian ageing. The role of mitochondria in oocytes and follicles. Human Reproduction Update. 2016;22(6):725-743. doi:10.1093/humupd/dmw028
Van Blerkom J. Mitochondrial function in the human oocyte and embryo and their role in developmental competence. Mitochondrion. 2011;11(5):797-813. doi:10.1016/j.mito.2010.09.012
Bentov Y, Hannam T, Jurisicova A, Casper RF. Coenzyme Q10 supplementation and oocyte mitochondrial function. Fertility and Sterility. 2014;102(3):e61.
Xu Y, Nisenblat V, Lu C, et al. Pretreatment with coenzyme Q10 improves ovarian response and embryo quality in low-prognosis young women with decreased ovarian reserve. Reproductive Biology and Endocrinology. 2018;16:29. doi:10.1186/s12958-018-0343-0
Ben-Meir A, Burstein E, Borrego-Alvarez A, et al. Coenzyme Q10 restores oocyte mitochondrial function and fertility during reproductive aging. Aging Cell. 2015;14(5):887-895. doi:10.1111/acel.12368
Agarwal A, Gupta S, Sharma RK. Role of oxidative stress in female reproduction. Reproductive Biology and Endocrinology. 2005;3:28. doi:10.1186/1477-7827-3-28
Vitagliano A, Noventa M, Gizzo S, et al. Chronic inflammation and reproductive outcomes. Reproductive Biology and Endocrinology. 2018;16:19. doi:10.1186/s12958-018-0337-y
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Diamanti-Kandarakis E, Christakou CD, Kandaraki E, Economou FN. Metabolic syndrome and reproductive dysfunction. Metabolism. 2010;59(6):859-865. doi:10.1016/j.metabol.2009.09.019
Poretsky L, Cataldo NA, Rosenwaks Z, Giudice LC. The insulin-related ovarian regulatory system in health and disease. Endocrine Reviews. 1999;20(4):535-582. doi:10.1210/edrv.20.4.0374
Chavarro JE, Rich-Edwards JW, Rosner BA, Willett WC. Dietary fatty acid intake and fertility in women. American Journal of Clinical Nutrition. 2007;85(1):231-237. doi:10.1093/ajcn/85.1.231
Gaskins AJ, Chiu YH, Williams PL, et al. Omega-3 fatty acid intake and probability of live birth in women undergoing assisted reproduction. Human Reproduction. 2018;33(7):1294-1302. doi:10.1093/humrep/dey148
Kloss JD, Perlis ML, Zamzow JA, et al. Sleep, sleep disturbance, and fertility in women. Sleep Medicine Reviews. 2015;22:78-87. doi:10.1016/j.smrv.2014.10.005
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“Joy is not a luxury in fertility. It’s part of the biology that supports conception.”
Transcript:
If you are over 35 and trying to conceive, you’ve likely heard that fertility declines with age.
But that conversation is often incomplete.
Age alone is not the whole story.
What matters more is the environment your eggs and sperm are developing in—and that environment is influenced by inflammation, oxidative stress, nutrient status, metabolic health, sleep, and stress.
There is a term in research called inflammaging. It describes the gradual increase in inflammation and oxidative stress as we age.
This process can impact mitochondrial function, hormone signaling, and DNA stability—all of which are essential for reproduction.
Eggs and sperm are some of the most metabolically active cells in the body. They rely heavily on mitochondria, the energy centers of the cell.
When inflammation and oxidative stress are high, mitochondrial function declines, and reproductive cells become more vulnerable.
The hopeful part is this: your body is responsive.
When you improve the environment your reproductive cells are developing in, fertility can improve.
Why Testing Matters Before Conception
One of the biggest gaps in conventional fertility care is jumping straight to treatment without fully understanding the internal environment.
Most fertility workups focus on hormones, ultrasounds, and semen analysis.
While helpful, they do not tell the full story.
To truly understand egg and sperm quality, you need to assess inflammation, nutrient status, and metabolic health.
These markers provide insight into the environment your reproductive cells are developing in—and help guide a more individualized approach.
Key Lab Markers to Assess
C-reactive protein (CRP) is a marker of systemic inflammation.
Even low-grade inflammation can impact ovulation, implantation, and early pregnancy development.
If CRP is elevated, the next step is identifying the root cause.
Iron balance is another important factor. Ferritin, iron, and total iron-binding capacity provide insight into oxygen delivery and mitochondrial function.
Both iron deficiency and excess can increase oxidative stress.
Prolactin is also important to assess.
It can rise in response to stress, metabolic dysfunction, or thyroid imbalance, and elevated levels can disrupt ovulation and progesterone signaling.
Thyroid antibodies—including TPO and thyroglobulin antibodies—are often missed in standard testing.
Autoimmune thyroid patterns can impact fertility, miscarriage risk, and overall reproductive health.
Uric acid is another useful marker.
Although often associated with gout, it also reflects oxidative stress and metabolic dysfunction.
Vitamin B12 and vitamin D play key roles in DNA synthesis, methylation, immune regulation, and hormone signaling.
Testosterone and SHBG help assess androgen balance and insulin sensitivity, which influence both egg and sperm quality.
A lipid panel provides insight into metabolic inflammation and hormone production.
Homocysteine is linked to methylation and cardiovascular health. Elevated levels are associated with increased oxidative stress and poorer reproductive outcomes.
Fasting insulin is one of the most overlooked markers in fertility care.
Insulin resistance increases inflammation, disrupts hormone signaling, and negatively impacts egg and sperm quality.
Glucose levels can appear normal for years while insulin signaling is impaired.
That is why assessing insulin—and calculating HOMA-IR—is so important.
When you look at these markers together, you gain a clear picture of your internal environment.
And that allows you to create a plan tailored to your body.
Mitochondria and Egg Quality
Egg cells contain significantly more mitochondria than most other cells in the body.
These mitochondria provide the energy required for chromosome separation and early embryo development.
When mitochondrial function declines, egg quality declines with it.
Supporting mitochondrial health is one of the most impactful strategies for improving fertility over 35.
CoQ10 is one of the most well-researched nutrients for this.
The ubiquinol form is preferred, as it is more bioavailable.
CoQ10 supports energy production within the cell and acts as an antioxidant.
Minerals also play a critical role in mitochondrial function.
Magnesium, zinc, selenium, copper, and iron are all involved in antioxidant defense and energy production.
Many people are depleted in these nutrients due to stress, soil depletion, and restrictive diets.
This is why targeted testing and nutrition are essential.
Nutrition to Reduce Inflammation
Food is one of the most effective ways to reduce oxidative stress.
A simple place to start is increasing antioxidant-rich foods.
Focus on colorful fruits and vegetables such as berries, leafy greens, beets, carrots, sweet potatoes, citrus, and pomegranates.
Herbs and spices are another powerful tool.
Turmeric, ginger, cinnamon, oregano, rosemary, and cloves contain polyphenols that help reduce inflammation and support metabolic health.
Omega-3 fats are also essential.
They help regulate inflammatory signaling and support cell membrane health.
Fatty fish such as salmon, sardines, mackerel, and anchovies are the best sources.
If supplementing, quality matters.
Fish oil should be stored in the refrigerator to prevent oxidation.
Dosage should be individualized based on dietary intake.
Sleep: The Most Overlooked Fertility Tool
Sleep is one of the most overlooked lifestyle factors in fertility.
Poor sleep increases cortisol, disrupts insulin sensitivity, and raises inflammation.
During sleep, the body repairs tissues, regulates hormones, and clears oxidative byproducts.
Improving sleep can have a profound impact on fertility.
Simple strategies include:
Turning off screens at least 60 minutes before bed
Keeping your bedroom cool and dark
Going to bed at a consistent time
Getting morning sunlight after waking
These habits help regulate circadian rhythm and support hormone balance.
Movement and Metabolic Health
Strength training plays an important role in fertility.
It improves insulin sensitivity, supports mitochondrial function, and reduces inflammation.
Muscle tissue acts as a metabolic organ.
Increasing lean muscle mass improves glucose handling and reduces metabolic stress.
Two to four sessions of moderate strength training per week can make a meaningful difference.
Balance is key.
Excessive high-intensity training can increase stress hormones and disrupt ovulation, especially if the body is already under stress.
The Role of Stress and “Vitamin J”
There is another essential piece of fertility that is often overlooked: joy.
Positive emotional states shift the nervous system out of fight-or-flight and into a restorative state.
This reduces inflammation and supports hormone regulation.
Joy is not optional—it is biological.
Some of the most effective ways to increase “vitamin J” include:
Laughter, which lowers cortisol and calms the nervous system
Singing, which stimulates the vagus nerve
Gratitude, which shifts the brain toward safety and abundance
Intimacy and orgasm, which increase oxytocin and endorphins
Time in nature, which reduces inflammation and stress
Massage therapy, which supports circulation and relaxation
Walking, which helps regulate blood sugar and stress
Morning sunlight, which supports the circadian rhythm
Meditation and deep breathing, which calm the nervous system
These practices signal safety to the body.
And the body prioritizes reproduction when it feels safe, nourished, and supported.
The Bottom Line
Fertility after 35 is not just about age.
It is about the environment in which your reproductive cells are developing.
When inflammation and oxidative stress are high, those cells become more vulnerable.
But when you support mitochondrial health, improve metabolic stability, reduce inflammation, and create more joy in your life, fertility outcomes often improve.
Every plan should be individualized.
But starting with these foundations—targeted testing, nutrition, sleep, movement, and nervous system regulation—creates the conditions for fertility to thrive.
Your body is responsive.
When you work with it instead of against it, conception becomes more supported.