The middle ear is an air-filled space behind the eardrum. The Eustachian tube connects that space to the back of the nose and throat, helping with pressure and drainage. This connection is central to the GAPS explanation of glue ear and recurring ear infections.[1][2]
A simple map makes the discussion easier to follow. Oil placed in an ear canal, fluid behind an eardrum and microbes in the throat are in different locations. Once those places are clear, the related food and probiotic guidance makes more sense.
The Middle Ear and Its Three Small Bones
The eardrum separates the outer ear canal from the middle ear. Inside the middle ear, three connected bones carry vibrations onward: the malleus, incus and stapes. Their everyday names are the hammer, anvil and stirrup. The expanded GAPS chapter describes this as a small space, roughly one cubic centimeter, normally filled with air.[1]
That helps explain why the location of fluid matters. Glue ear refers to mucus retained in the middle-ear space. It is not simply something sitting at the outside opening of the ear. Campbell-McBride connects the retained fluid with reduced sound transmission and muffled hearing.[1]
The Eustachian Tube Connects the Ear and Throat
The tube runs from the middle ear toward the back of the nose and throat. Its pressure-balancing job is familiar when your ears pop during a change in altitude. In the book’s account, swelling near the opening can interfere with that exchange.[1]
The chapter also describes a clearing system inside the tube. Tiny hairs called cilia point toward the throat. Mucus moves in the same direction, away from the middle ear. Mucus-producing cells and lymph follicles belong to the local protective system described in the chapter.[1]
| Structure | Where It Is | Why It Matters Here |
|---|---|---|
| Outer ear canal | The passage leading inward to the eardrum. | It is separated from the middle ear by the eardrum. |
| Eardrum | Between the outer ear canal and middle ear. | It forms a boundary and takes part in transmitting sound. |
| Middle ear | The space behind the eardrum. | This is where the GAPS chapter describes retained mucus and glue ear. |
| Eustachian tube | Between the middle ear and the back of the nose and throat. | It provides a route for pressure exchange and clearance. |
| Cilia and mucus | Along the Eustachian-tube lining. | Their clearing direction is toward the throat, away from the middle ear.[1] |
Tubal Tonsils and Adenoids
The expanded GAPS chapter names the tubal tonsils as immune tissue guarding the tube’s opening. It describes swelling there as part of the obstruction mechanism. These are worth distinguishing from the adenoids when you read about the tissues behind the nose.[1]
NIDCD describes adenoids as immune tissue behind the nose, near the Eustachian tubes. They are another nearby structure, not a replacement name for every piece of lymphoid tissue in this area.[3]
For the GAPS mechanism explained here, the important sequence is the one the chapter actually describes: altered local flora, inflammation, an obstructed opening and mucus that cannot clear normally.[1]
Fluid and an Active Infection Are Different
A child can have retained middle-ear fluid without the pain and fever of an active infection. The expanded book then describes an infection entering that mucus-filled space and causing an acute episode. It connects persistent fluid and reduced hearing with learning and speech difficulties, without making ear problems the explanation for every child’s speech delay.[1]
This is why “the pain stopped” and “the fluid has cleared” are different observations. The ear-infection symptoms checklist keeps glue-ear, acute-infection and recurring patterns separate.
How This Fits the GAPS Explanation
In her 2020 ear-infection entry, Campbell-McBride again connects abnormal nose-and-throat flora with inflammation around the Eustachian tube. She describes the longer-term work as following the GAPS Nutritional Protocol and supporting beneficial flora in the throat with homemade kefir or a commercial probiotic.[2]
The GAPS oral probiotic routine explains those timings. The guide to recurring infections after antibiotics follows the retained-fluid part of the explanation. The broader ear-infection and glue-ear guide brings the pieces together.
Use the Map When You Keep Notes
Clear notes can be quite ordinary. For example, “the earache settled on Tuesday, but quiet speech still seems hard to hear” records two observations without deciding what caused them. Keep the date, the side affected and the change you noticed together.
An ear examination can check the eardrum and fluid behind it. Your notes help describe what has been happening between visits.[3]
My Reading Your Child’s Signs course is listed in the WFLI Shop. It is built around organizing observations and understanding what the GAPS books connect with the next question. For this topic, start with the ear checklist and keep the hearing changes beside the painful episodes.
References
- Campbell-McBride, Natasha. Gut and Psychology Syndrome, expanded second German edition (2015), Part 3, Chapter 1, “Ohrinfektionen und Paukenerguss” (“Ear Infections and Glue Ear”). English explanations translated from the supplied German text.
- Campbell-McBride, Natasha. Gut and Physiology Syndrome (2020), A–Z, “Ear infections.”
- National Institute on Deafness and Other Communication Disorders. Ear Infections in Children. Updated March 16, 2022; anatomy, middle-ear fluid and examination.
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