How GAPS Feeds the Immune System

The GAPS food discussion starts with nourishment: meat, animal fat, organ meats, fish, eggs, and high-fat dairy, particularly fermented forms, alongside vegetables and herbs. In Gut and Physiology Syndrome, Campbell-McBride connects these foods with the protein, fats, and fat-soluble vitamins the immune system needs. The same section changes the food emphasis during a cold and keeps a dairy-tolerance exception.^[1]

Organ Meats and Natural Fats

Liver receives particular attention in the book. It also names kidney, heart, tongue, tripe, glands, and brain, describing each as contributing its own mix of nutrients. This is a reason to look at the range of animal foods available to you, rather than assuming a meal made only from lean muscle meat covers the whole discussion.^[1]

Cholesterol is central to Campbell-McBride’s explanation of immune nourishment. She discusses its role in immune-cell activity and cites work on LDL binding bacterial toxins. One of her cited papers is specifically about binding and partial inactivation of Staphylococcus aureus alpha-toxin by human LDL. That laboratory question is distinct from choosing a blood-cholesterol target for an individual.^[2][3]

Fermented Foods and Herbs

The book describes fermented foods as supplying active microbes and pre-digested nutrients. Its examples are homemade yogurt, kefir, sour cream, cottage cheese, and whey. Herbs and spices include turmeric, ginger, garlic, onion, cloves, cumin, caraway, dill, and cilantro, used in small amounts as part of the diet.^[4]

For the actual preparation, our 24-hour GAPS yogurt recipe and homemade ghee recipe keep the methods on their own pages. Use a dairy form that has already been introduced and is tolerated; the immune-food chapter explicitly allows for dairy not being tolerated.^[1]

What Changes During a Cold

During a cold, the book emphasizes hot soups and stews made with homemade meat stock, fatty meats, and well-cooked vegetables. It also discusses organ meats, oily fish, eggs, butter, sour cream, and cultured dairy within that nourishment picture. Its daily sour cream, butter, and ghee recommendation includes the exception “unless dairy is not tolerated.”^[1]

The source makes a separate distinction for raw foods. Freshly pressed vegetable and fruit juices are discussed when there is no active infection, and advised against during one. It also names chocolate, fruit, and nuts as foods to avoid during active infection, with excessive raw vegetables in the same discussion. Cooked vegetables are recommended hot, in soup, stew, or a meal with fatty meat.^[4]

A useful kitchen starting point is the chicken meat-stock recipe. The stock and its cooked meat give you a base for the soft, hot meals described in the chapter. The recipe’s food forms and your current GAPS route still determine which additions belong in your bowl.

How the Book Discusses Avoiding Animal Foods

Campbell-McBride is critical of a strict diet excluding all animal foods and describes it as a form of fasting. She reports poor immune responses among the vegan patients she saw in her clinic. That is her clinical account, not a diagnosis based on someone reporting that they rarely catch colds.^[4]

The chapter emphasizes animal foods even when discussing a plant-heavy eating pattern. It does not set out a separate vegetarian GAPS route. The Intro versus Full guide is a better place to choose your food route than trying to build one from this immune-food section alone.

The Supplements Named in This Section

The source names good-quality cod liver oil, L-lysine, mushroom supplements such as cordyceps, reishi, coriolus, maitake, and shiitake, raw bee pollen, dried green juices, colostrum, herbs, and natural vitamin C with zinc. These are the items discussed in the book, rather than a shopping list everyone must begin together.^[5]

Their roles are not identical. L-lysine is discussed for a few days at the beginning of a resident viral flare such as a cold sore. Most of the other supplements are discussed on a longer-term basis. Campbell-McBride herself recommends consulting a health practitioner to obtain quality supplements for that work.^[5]

Put the Food Discussion Into a Meal

Start with the meal you already know your household can eat. Check its animal-food component, the fat used with it, and the cooked vegetables you can serve alongside. If you are adding an organ meat or cultured food, use its actual introduced form rather than treating the general list as permission to add everything at once.

The complete Top Ten lists cover the wider food and lifestyle influences. This page stays with nourishment, food form, and the particular supplement context.

Frequently Asked Questions

Does the Dairy Exception Apply Here?

Yes. The 2020 immune-food section explicitly says “unless dairy is not tolerated” when recommending homemade sour cream, butter, and ghee. Keep that qualification attached to the food advice.^[1]

Why Does the Book Prefer Hot Cooked Vegetables During a Cold?

It describes cooked vegetables as easier to digest and more nourishing during illness and recommends them hot, with stock or fatty meat. Its raw-food restrictions during an active infection are a separate part of the same section.^[4]

Is the Food List Also a Supplement Schedule?

No. The food paragraphs and the supplement paragraph have different jobs. The latter names several substances and distinguishes brief L-lysine use from the longer-term context of most of the others.^[5]

Where to Start

If making the stock base is the work you want help with, The Stock Pot Course is listed in the WFLI shop. The immune-system overview explains where food sits alongside gut flora and household habits.

References

1. Campbell-McBride, N. Gut and Physiology Syndrome (2020), “Feed your immune system well!”, animal foods, organ meats, hot soups, and dairy-tolerance exception.
2. Campbell-McBride, N. Gut and Physiology Syndrome (2020), cholesterol and immune function within “Feed your immune system well!”
3. Bhakdi, S., Tranum-Jensen, J., Utermann, G., and Füssle, R. (1983). Binding and partial inactivation of Staphylococcus aureus alpha-toxin by human plasma low density lipoprotein. Journal of Biological Chemistry, 258(9):5899–5904. Paper cited in the 2020 book.
4. Campbell-McBride, N. Gut and Physiology Syndrome (2020), fermented foods, herbs, raw-food restrictions during infection, and veganism discussion within the immune-food section.
5. Campbell-McBride, N. Gut and Physiology Syndrome (2020), supplement paragraph at the end of “Feed your immune system well!”