The Cornelis Method
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Benefits

  • Lower body burden of endocrine disruptors
  • Better hormonal signaling
  • Reduced oxidative stress
  • Cleaner detox pathways

Method summary

  • Swap non-stick cookware for stainless / cast iron / ceramic
  • Filter drinking water (activated carbon + RO where possible)
  • Fragrance-free personal care & cleaning products
  • Glass or stainless food storage, never heat food in plastic
  • HEPA air filtration in the bedroom
Weekly protocol

What a week looks like

Mon
Kitchen auditScan cookware, cutting boards, and food storage. Replace any scratched non-stick with stainless / cast iron / ceramic. Move all reheating out of plastic.
Tue
WaterVerify your drinking water source. Install or replace an activated-carbon filter (whole-house or under-sink). Consider RO for known contaminants.
Wed
Personal careScan every product in your bathroom. Replace the top offender (usually fragrance, oxybenzone sunscreen, or paraben lotion) with a fragrance-free / EWG Verified alternative.
Thu
Cleaning productsScan cleaning cabinet. Swap quaternary ammonium / bleach / synthetic-fragrance sprays for hydrogen peroxide, castile, or plant-based alternatives.
Fri
AirAdd HEPA filtration to the bedroom. Check CO₂ and PM2.5 with a sensor. Open windows 10 min daily unless outdoor AQI is poor.
Sat
Body burden labs (quarterly)Optional: order urinary phthalates + BPA, PFAS blood panel, or heavy metals if you've never tested. Establish baseline.
Sun
Reset & inventoryPhotograph what's left in kitchen / bath / cleaning cabinet. Track adherence: no plastic-heated food, filtered water, fragrance-free personal care.
Adherence

Track your check-ins

Log a daily check-in for environmental health and watch your streak, weekly adherence, and pillar score climb. Charts unlock once you sign in.

Sign in to track →
Product scanner

Scan any product for toxin load

Photograph cookware, personal care, cleaning products, food packaging, or a water bottle. AI grades toxin load 0–100, flags endocrine disruptors, PFAS, heavy metals, and problem plastics, then suggests cleaner swaps.

Practices

Core practices & cues

Scan before buy

Ongoing

New product entering the home → scan first, decide second.

Never heat plastic

Daily

Reheating? Use glass or stainless, always.

Fragrance-free default

Ongoing

Anything scented gets scrutinized; unscented is the default.

Filter drinking water

Daily

One filtered pitcher or tap for everything you drink.

Shoes off at the door

Daily

Cuts indoor lead, pesticide, and PFAS tracking.

Nutrition

Foods, principles, and targets

  • Choose organic for the Dirty Dozen (strawberries, spinach, kale, grapes, apples, peaches, pears, nectarines, cherries, tomatoes, bell peppers, celery).
  • Wild-caught small fish (sardines, anchovies) over large predators (swordfish, king mackerel) to limit mercury.
  • Rinse rice thoroughly and use a 6:1 water ratio to reduce arsenic.
  • Skip receipts if possible, thermal paper is a top BPA/BPS exposure route.
  • Never microwave in plastic, even if labeled microwave-safe.

Filtered drinking water

100% of intake

Removes chlorine byproducts, VOCs, most heavy metals, some PFAS with the right filter.

Organic Dirty-Dozen produce

≥ 80%

Pesticide residue reduction is measurable in urine within days.

Large-predator fish

≤ 1 serving/month

Mercury bioaccumulates in tuna, swordfish, king mackerel, shark, tilefish.

Supplements

Stack & dosing

Compound
Dose
Tier

N-acetylcysteine (NAC)

Glutathione precursor; supports phase-II detox.

AM or with meal

600–1200 mg/day
optional

Sulforaphane (broccoli sprout extract)

Activates NRF2 antioxidant pathway; supports xenobiotic clearance.

AM

10–40 mg/day
optional

Vitamin C

General antioxidant; supports iron absorption too, space from thyroid meds.

With meal

500–1000 mg/day
optional

Informational only. Confirm doses with your clinician, especially with medications.

Sleep & recovery

Recovery levers

  • Sauna 20–30 min, 3–4×/week, one of the few interventions with human data on mobilizing lipophilic toxicants via sweat.
  • Adequate fiber (30 g+/day) binds bile-conjugated toxicants for excretion; without it, enterohepatic recirculation reabsorbs them.
Biomarkers

What to track & how to move it

Urinary phthalates & BPA

Below population median

Personal care, plastic food contact, receipts.

PFAS (blood)

Serum PFOA/PFOS < 2 ng/mL each

Non-stick cookware, waterproof clothing, fast-food wrappers, contaminated water.

Heavy metals (Hg, Pb, Cd)

Blood mercury < 5 µg/L, lead < 2 µg/dL

Fish choice, water, older paint, cigarette smoke, cadmium in offal.

Indoor PM2.5

< 12 µg/m³ average

HEPA, ventilation, avoid gas stoves without hood venting outdoors.

Upload lab work to auto-track →
Troubleshooting

If you're off target, do this

New unexplained fatigue / brain fog

Mold in the home

  • Test for water damage / VOCs.
  • Consider ERMI or Aspergillus panel.
  • Remediate the source before symptomatic support.

High phthalate metabolites

Personal care & fragrance

  • Eliminate fragrance for 2 weeks and retest.
  • Switch shampoo, deodorant, lotion to fragrance-free.
See a clinician

Red flags

  • Symptoms clearly linked to a specific product or environment (rash, headaches after cleaning, wheeze near new furniture), remove the exposure first, then investigate.
  • Known well water without a recent quality test.
  • Occupational exposure (auto body, salon, printing, agriculture) with no PPE.
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