MCT Ketogenic Diet for Epilepsy: GAPS History and Rules

The older GAPS epilepsy chapter describes an MCT-oil ketogenic diet developed in the 1970s. Its purpose was to produce ketones efficiently while allowing more protein and carbohydrate than the classic diet. This is a history of a calculated epilepsy treatment, not permission to add MCT oil to GAPS.^[1]

What the MCT Diet Actually Is

The MCT diet uses oil built from medium-chain triglycerides, which produces more ketone bodies than the cream and butter used in the classic ketogenic diet.^[1] It supplies 60% of daily calories from MCT oil, a highly refined product that doesn’t taste particularly pleasant and can cause real digestive trouble, including diarrhea, cramping, and vomiting. Because MCT oil produces ketones more efficiently than cream and butter do, the diet allows more protein and carbohydrate at meals than the classic version permits.^[1]

How the MCT Diet Compares to the Classic Version

The classic and MCT ketogenic diets are considered roughly equally effective for seizure control.^[1] The MCT version has become more common in clinical settings for a practical reason: it’s easier for dietitians to calculate, which matters given how precisely these diets have to be managed. Like the classic version, it requires medical and dietetic supervision, careful meal planning, and supplementation to cover nutrients the diet itself doesn’t supply.

The MCT Diet Versus MCT Oil on GAPS

Gut and Psychology Syndrome describes the MCT diet as an established clinical epilepsy treatment. In Gut and Physiology Syndrome, Campbell-McBride says she does not recommend MCT oil as a general GAPS supplement because it is highly processed and not natural for the human body to consume.^[2]

The clinical MCT epilepsy diet and a general GAPS supplement are different uses. The first is a calculated epilepsy protocol; the second is outside Campbell-McBride’s stated GAPS preference, which uses whole fats such as coconut oil and ghee for deliberate ketosis.^[2]

Keep the Newer GAPS Rules Beside the History

The 2020 book does not recommend MCT oil because it is highly processed. In its separate epilepsy guidance, it also advises avoiding plant- and fish-oil supplements for at least the first year. Its later cod-liver-oil consideration is narrower: at least six months without seizures, susceptibility to common colds and cold-season immune support, beginning very cautiously.^[2]

That later passage does not recommend MCT oil after six months or erase the first-year restriction. The cod-liver-oil guide keeps the complete supplement discussion in one place.

Frequently Asked Questions

How Does the MCT Diet Compare With the Classic Version?

The two are considered roughly equally effective for seizure control, per the GAPS book.^[1] The MCT version is simply easier for dietitians to calculate, which is why it’s become more common clinically.

Does Campbell-McBride Recommend MCT Oil on GAPS?

In her more recent book, she states she personally does not recommend MCT oil, calling it highly processed, in the context of her own GAPS protocol’s approach to ketosis.^[2] This is distinct from the MCT diet’s established use as a medically supervised epilepsy treatment.

Is the MCT Epilepsy Diet a Home-Designed Protocol?

No. Like the classic ketogenic diet, the MCT diet requires careful medical and dietetic calculation and supervision, and it isn’t a protocol to design or run independently.

Your Next Step

Use the GAPS epilepsy overview for the wider discussion. Continue with Classic Ketogenic Diet for Epilepsy: The GAPS Account, or Gut Health, Nutrients and Seizures: The GAPS Explanation, for the next question you want to understand.

My Care Team Log is listed in the WFLI Shop. A notebook can keep your dated observations and questions together.

References

1. Campbell-McBride N. Gut and Psychology Syndrome, expanded text represented by the second German edition (2015), “Epilepsie” (“Epilepsy”). English paraphrases checked against that text; no English page numbers are implied.
2. Campbell-McBride N. Gut and Physiology Syndrome (2020), relevant GAPS, ketogenic-diet and nutritional-supplement discussions.