Most people treat illness as something happening to them. Dr. Ulric Williams, a New Zealand physician who spent decades working with patients that orthodox medicine had given up on, argued the opposite: illness is something the body is doing for you. Understanding that difference changes almost everything about how you approach your health.

Why the body's internal environment matters more than germs
What a "healing crisis" actually is and why suppressing it may cause long-term harm
How fear operates as a direct physical cause of disease, not just a mental one
Eight distinct dietary protocols and when each one applies
Why what you think while you pray matters more than what you say
Practical fasting and reintroduction protocols drawn from decades of clinical work

The body as a self-cleaning system

The terrain theory of disease holds that whether you get ill is determined primarily by the state of your body's internal environment. Germs are everywhere. Whether they cause harm depends on whether they find a hospitable environment. A well-nourished, well-rested body with adequate mineral supply and functioning elimination channels is far less vulnerable than one burdened by poor diet, accumulated waste, and chronic stress.

Williams was not anti-science. He was a trained surgeon before he became a naturopath. His argument was that Western medicine had attached itself to one half of the disease equation (the microorganism) and largely ignored the other half (the terrain that determines whether the organism causes harm). Addressing only the germ while leaving the terrain untouched, he argued, produces temporary relief at best and chronic deterioration at worst.

What a healing crisis is and why it matters

When the body becomes overloaded with accumulated waste, it attempts to clear that waste through concentrated eliminative effort. Williams called these events healing crises. They can look like fever, skin eruption, heavy discharge, or intense but short-lived illness. They are uncomfortable. They can be frightening if you do not know what they are.

The standard medical response is to suppress these symptoms as quickly as possible. Williams argued this is exactly the wrong approach. Suppressing a healing crisis halts the eliminative process before it completes. The waste burden is not cleared. The body attempts the process again later, in a weakened state. Repeat this enough times and what began as an acute, self-resolving crisis becomes a chronic, progressive condition that is much harder to reverse.

This reframe has real clinical implications. Williams documented cases of septic infections, bone infections, and acute abdominal conditions that resolved without surgery or antibiotics when the body was given the conditions it needed: fasting, rest, hydration, enemas, and appropriate external support. These are not anecdotes he dressed up as evidence. He treated them as demonstrations of a consistent and reproducible principle.

The dietary framework in practice

The dietary guidance in this work is not a single "eat this" prescription. Williams identified eight distinct dietary patterns, each suited to a different clinical situation. A patient undergoing vigorous detoxification needs a different approach to one who is weak, depleted, and unable to sustain a demanding protocol. Someone with a heavy digestive disorder needs a different structure to a labourer who needs to maintain physical output while improving their internal terrain.

Across all eight patterns, certain principles are constant. Fresh fruit and vegetables form the nutritional foundation because of their alkaline mineral content. Refined foods, processed foods, and chemically treated foods are excluded throughout. Animal protein is used sparingly and kept separate from starchy foods at the same meal, because the two require opposing biochemical environments in the digestive system and combining them in quantity generates fermentation rather than clean digestion.

All starchy foods are eaten in wholemeal form and consumed crisp and dry, never softened in liquid. The reason is physiological: starch digestion begins in the mouth with an enzyme called ptyalin, which is present in saliva. Dry, crisp food has to be chewed thoroughly, which gives ptyalin time to work. Soggy starch swallowed quickly bypasses this first stage and reaches the stomach as partially digested material that ferments rather than digests cleanly.

Fasting as a clinical tool

Fasting is treated throughout this work not as a spiritual practice or a weight loss tool but as a precise clinical intervention. When the body is using its resources to digest food, those same resources are not available for elimination and repair. Withdrawing food diverts the body's energy toward clearing what has accumulated.

The reintroduction of food after an extended fast requires as much care as the fast itself. Williams provided a detailed six-day staged protocol for returning to eating after longer fasts, beginning with single varieties of fresh fruit and progressing gradually through salads, cooked vegetables, starchy foods, and eventually protein. Moving too quickly or in the wrong sequence interrupts the elimination that is still in progress.

The thought at the back of your mind

Williams documented a case that illustrates something genuinely surprising about how mental states affect outcomes. A woman had prayed for twelve years for her husband's recovery from severe asthma and for him to find work. Williams asked her to describe exactly what she did when she prayed. She said she knelt and asked God to heal him and give him a job.

Then he asked what was actually in her mind while she did that. The answer came straight away: her husband's suffering, her children going hungry, the rent unpaid, no adequate clothing. That was the dominant impression operating below the surface petition.

Williams' point was not about prayer technique. It was about which thought actually drives the outcome. The surface wish is what you say. The back-of-mind thought is what you genuinely expect. He argued it is the latter that shapes what the body and circumstances produce. Changing that deeper expectation, from resignation to genuine certainty of recovery, was part of his clinical practice. Eight days after the woman changed what she held in her mind, her husband got his job back.

Whether you find the metaphysical framework convincing or not, the practical observation is worth taking seriously: sustained fear, worry, and settled expectation of bad outcomes produce measurable physiological effects through the stress pathways. Williams was making a mechanistic claim about the relationship between habitual thought and physical health, not just a spiritual one.

Why orthodox medicine gets in the way

Williams did not argue that conventional medicine had no value. He argued that it had built its entire treatment model around suppressing the body's own eliminative processes, and that this approach was generating the chronic disease epidemic he was watching unfold around him. Vaccines, pharmaceutical drugs, and routine surgical intervention were not, in his view, tools of healing. They were tools of suppression that created the appearance of improvement while preventing the underlying cause from being resolved.

This is a strong claim and it was not made carelessly. Williams spent years as a surgeon before concluding that the framework he had trained in was producing worse outcomes than the approach he subsequently developed. His critique was based on clinical observation across decades, not ideology.

Going deeper

This post only covers a fraction of what Williams documented. The full work includes detailed case histories, complete dietary protocols for children from infancy through school age, fasting protocols for acute and chronic conditions, and an extensive collection of practical recipes grounded in the same nutritional principles. If you want to ask specific questions about any of it, you can chat with the full document on tryit.tv and get a personalised answer in seconds, without having to work through hundreds of pages yourself.