Hormones and Endocrine Health: The GAPS Guide

The GAPS explanation of hormones starts with a system working together: endocrine glands, the gut, the food we digest and the substances we encounter. In Gut and Physiology Syndrome, Dr. Natasha Campbell-McBride connects gut flora with hormone production, signaling and the nutrients the endocrine system needs.^[1]

This guide is a starting map. If you came with a specific question about thyroid medicine, periods, cholesterol or a chemical on a product label, the focused guides below take you to that question without asking you to work through every hormone first.

What the Endocrine System Does

Hormones are chemical messengers. The thyroid, adrenal glands, ovaries, testes, pancreas and other hormone-producing tissues contribute different signals, with feedback among organs. Campbell-McBride compares this coordinated work with an orchestra: a change in one part can affect the rest.^[1]

Different hormones are made in different ways. Cholesterol is a starting material for steroid hormones, including cortisol and sex hormones. It is not the starting material for every hormone; thyroid hormones and adrenaline are different. The cholesterol guide explains that distinction.^[1]

Three Ways GAPS Connects the Gut and Hormones

These are connected routes in the GAPS model. They do not mean that a symptom names its own cause. Fatigue, a changed period or a digestive problem still needs to be described in its actual context.^[1]

Choose the Guide for Your Question

Thyroid Function and Hormone Action

Thyroid Function and the Gut covers the book’s clinical explanation, Hashimoto’s food exceptions and the instruction to continue existing thyroid medication. Functional Hormone Deficiency explains the lock-and-key analogy, while Vitamin B6 and Thyroid keeps the two examples separate.

Halogens, Iodine and Your Thyroid explains why the actual chemical form matters. The book’s high-dose iodine discussion explicitly calls for professional supervision and recognizes overdose; a general article is not a personal iodine schedule.^[1]

Periods, Fertility and Sex Hormones

My GAPS cycle-care story describes the period changes I have actually experienced. Sex Hormones and Gut Flora explains the source’s reproductive-hormone discussion. Long-Term Veganism, Fertility and Libido addresses the particular dietary argument in the book, rather than treating every plant-containing diet as the same thing.

Nutrients, Cholesterol and Everyday Exposures

Gut Flora and Vitamin Production distinguishes microbial production from the nutrients a person can use. Cholesterol for Hormones and Repair separates cholesterol’s biological roles from a blood-test target. Endocrine Disruptors and Xenoestrogens turns the household exposure discussion into clear questions about products and ingredients.

Where Adrenal Hormones Fit

The book discusses the adrenal glands as part of the endocrine team, including stress responses and steroid hormones. That is a related part of the picture, but not every stress hormone is a steroid. A description of tiredness also does not establish which gland is responsible.^[1]

For daily GAPS routines, our Full GAPS daily rhythm brings meals and preparation back into view. It is a household guide, rather than a hormone test or a treatment timetable.

Food Still Follows the GAPS Phase

A hormone article does not replace the GAPS food sequence. Intro and Full GAPS have different starting points and food forms. Pregnant and breastfeeding women follow the source’s Full GAPS guidance, rather than choosing Intro because a thyroid or reproductive-health paragraph mentions gut healing.^[2]

The book’s discussion of historical soaking, sprouting and fermentation is not blanket permission to add grains or soy to strict GAPS. Use the GAPS food list for the actual permitted foods and introductions.

Our Family Experience With Hormonal Changes

For me, periods have become more consistent and less painful since we started GAPS in July 2024. They are usually lighter, with occasional heavy periods. That is a change I can describe firsthand. I have not experienced perimenopause or menopause, and the end of our earlier infertility gap happened in 2021, before GAPS.

Keeping that chronology clear matters to me. You can read the full cycle account or my sixth-pregnancy story for the details, without treating one family’s timeline as everyone’s expected outcome.

Keep Treatment and Observation Together

The official GAPS thyroid FAQ says to continue existing thyroid medication while following GAPS. Its account of possible later reduction is individual, not an instruction to stop after a set number of months. Keep prescribed treatment and follow-up testing with the clinician managing it.^[2]

A short record of food changes, symptoms, medicine and test dates can help keep the sequence straight. It is more useful than changing several things at once and then trying to reconstruct what happened.

If you want help bringing the food, home and daily-routine parts together, start with the part your household is working on now. The GAPS Lifestyle is listed in my course catalog.

For the gut background, continue with the GAPS gut-flora guide.

For the next part of the hormone discussion, choose the question you are working on:

• Adrenal Function and Stress
• The GAPS Adrenal Symptom Checklist
• Low Cholesterol, Statins and Behavior
• Hot Flashes, Menopause and Gut Flora
• Cholesterol Functions and Food Sources

References

1. Campbell-McBride, N. Gut and Physiology Syndrome (2020), “Hormones,” endocrine teamwork, nutrients, protection, microbial signaling, thyroid, iodine, adrenal and sex-gland discussions; the cholesterol sections.
2. Campbell-McBride, N. Official GAPS FAQs, Thyroid problems, questions 4–6; Pregnancy and breastfeeding guidance, Full GAPS starting context.