Crunchy Coaching: Why Your Kitchen Matters More for Fertility Than You Think

First, what "crunchy" means here

Let's clear something up: going crunchy is not about rejecting modern medicine. Medication has its place, and no pantry swap replaces your doctor. Crunchy, in our world, means returning to foundations — real food, fewer synthetic chemicals, and a home environment that supports your body instead of quietly working against it.

Think of it as stacking the deck in your favor before you ever need a prescription. Especially when you're trying to conceive.

Food is information, not just energy

We all know food gives us energy. What gets talked about less is that food also sends signals — to your hormones, your inflammation levels, and your reproductive system. And a lot of what fills modern grocery carts isn't really food anymore. It's ultra-processed: industrially formulated products made with ingredients you wouldn't find in a home kitchen.

Here's what recent research has found:

• For women: In a 2025 analysis of over 3,600 U.S. women, those eating the most ultra-processed food had 43% higher odds of infertility than those eating the least — even after adjusting for other factors. A second 2025 study found the same pattern, with body weight acting as part of the pathway.
• For men: A 2025 study of men at a fertility clinic found that higher ultra-processed food intake was linked to nearly 4x the odds of abnormally low sperm concentration.
• For both partners trying to conceive: A 2025 Dutch study of 831 women and 651 male partners found that higher ultra-processed food intake in men was linked to lower monthly chances of conception and a higher risk of subfertility — while in women, it was linked to slightly smaller early embryonic growth.
• Sugary drinks count too: A large North American preconception study found that drinking 7+ sugar-sweetened beverages per week was linked to about 20% lower monthly conception odds for both women and men.

On the flip side, whole-food patterns look protective. Women with the highest adherence to a Mediterranean-style diet before IVF had roughly 2.6x the likelihood of a live birth compared to those with the lowest adherence, in a 2018 study of 244 women under 35.

None of these studies prove that one snack causes infertility — most are observational. But the pattern is remarkably consistent: the closer your diet is to real food, the better your reproductive odds look.

It's not just what's on the plate — it's the kitchen itself

This is where crunchy coaching goes beyond "eat better." Your kitchen is full of quiet exposures that research is only beginning to map:

• Microplastics. In 2024, researchers found microplastics in every single human testicle examined — 23 out of 23 — at an average of 328 micrograms per gram of tissue. The same year, another study detected microplastics in men's semen and linked exposure to PTFE (the chemical in nonstick coatings) with lower sperm counts. On the women's side, microplastics were first detected in human placentas in 2021, on both the maternal and fetal sides.
• BPA and phthalates. These endocrine-disrupting chemicals hide in plastic food containers, canned food linings, and fragranced products. A 2024 meta-analysis linked BPA exposure to lower sperm counts and disrupted reproductive hormones in men. A 2020 study found that men who ate canned food daily had dramatically higher BPA levels, and daily use of plastic food containers was linked to lower semen volume. In women, a 2023 study of 1,228 women trying to conceive linked phthalate exposure to a lower probability of pregnancy per cycle.
• Pesticide residues. Men eating the most high-pesticide-residue produce had lower sperm counts in earlier research — and at the 2024 American Society for Reproductive Medicine congress, researchers reported that high pesticide-residue intake in male partners was tied to lower fertilization rates during IVF cycles. Choosing organic for the highest-residue produce is a simple hedge.

The crunchy kitchen audit: have this, skip that

You don't need to throw out your whole kitchen this weekend. But here's the priority list a coach would walk through with you:

• Cooking pans: favor stainless steel, cast iron, or ceramic. Retire scratched nonstick (PTFE) pans first — they're the biggest cookware source of concerning chemicals.
• Food storage: swap plastic containers for glass, especially for hot food. Never microwave in plastic.
• Canned foods: choose fresh, frozen, or BPA-free-lined cans when you can.
• Dishwasher detergent and cleaning products: choose fragrance-free, plant-based formulas. Conventional pods and scented products are a common source of phthalates.
• Water: filter your drinking water and skip single-use plastic bottles where possible — food, water, and air are all documented routes for microplastic exposure.
• Produce: wash everything well, and buy organic for the fruits and vegetables known to carry the heaviest pesticide residues (strawberries, spinach, peppers, apples).

Progress, not perfection. Every swap lowers the total load.

What a crunchy coach actually does

Reading studies is one thing. Changing a household is another. That's the gap a crunchy coach fills — think of it as having an in-home team for the exact questions that feel overwhelming alone:

• Which foods to build your fertility-friendly meals around (and which to quietly phase out)
• Exactly which pans, containers, and cleaning products to keep or replace — with specific recommendations, not vague "go nontoxic" advice
• How to handle the dishwasher detergent, the water filter, the takeout containers — the unglamorous stuff that actually matters
• A realistic plan for both partners, because his exposures count just as much as hers

No shame, no fear-mongering, no 47-step protocols. Just clarity on what to have, what to avoid, and what actually moves the needle.

References

1. Association between ultra-processed foods and female infertility: a large cross-sectional study — BMC Public Health, 2025
2. Consumption of ultra-processed foods and female infertility: a cross-sectional study — Frontiers in Public Health, 2025
3. The association between consumption of ultra-processed foods and sperm quality parameters — 2025
4. Higher maternal UPF intake linked to smaller early embryonic growth; paternal UPF linked to reduced fecundability — Human Reproduction, 2025
5. The role of the Mediterranean diet in assisted reproduction: a literature review — Nutrients, 2024 (reviewing Karayiannis et al., Human Reproduction, 2018)
6. Intake of sugar-sweetened beverages and fecundability in a North American preconception cohort — Epidemiology, 2018
7. Fruit, vegetable pesticide exposure may impair sperm during IVF cycles — ASRM Scientific Congress, 2024
8. Microplastic presence in dog and human testis and its potential association with sperm count — Toxicological Sciences, 2024
9. Association of mixed exposure to microplastics with sperm dysfunction: a multi-site study in China — eBioMedicine, 2024
10. Plasticenta: first evidence of microplastics in human placenta — Environment International, 2021
11. Cross-sectional study on exposure to BPA and phthalates and semen parameters in men attending a fertility center — Int. J. Environ. Res. Public Health, 2020
12. Exposure to chemicals found in many household products can lower odds of getting pregnant — Environmental Health Perspectives, 2023

Rachel Gould is a birth doula and maternal wellness coach serving the Phoenix Valley through Holista Health Collective — 1-on-1 support for preconception, pregnancy, birth, and postpartum.