Fatty Liver Expert: Your Liver Is Filling With Fat Right Now - Dr David Unwin

The host opens with a waist-to-height measure and a table comparing the sugar he expected to find in common foods with the figures given by Dr. David Unwin. The demonstration challenges the assumption that foods such as rice or cereal are low in sugar simply because they do not taste sweet. It also frames metabolic health as something that can change over time, rather than a diagnosis that only appears suddenly. The specific sugar equivalents are figures used in the interview and depend on the portions shown.

Unwin explains the mechanism through insulin: after eating carbohydrates, insulin moves glucose from the bloodstream into cells for energy. When intake exceeds what the body uses, he says, some of the surplus may be stored as fat. He describes his own biscuit habit and gradual increase in waist size, then connects excess glucose storage in the liver with fatty liver and insulin resistance. In his account, the pancreas responds by producing more insulin; over time, fat may also accumulate in the pancreas and impair its ability to regulate blood sugar. This is the doctor’s explanation of a metabolic process, not a diagnosis of any individual listener.

A central part of Unwin’s case comes from his own clinical practice. He says he began tracking patients in 2013 and reports that 93% of his patients with prediabetes returned to normal blood sugar on a low-carbohydrate diet. For patients who already had type 2 diabetes, he gives lower figures depending on how long treatment was delayed, including 73% when caught early and 50% after a further five years. These are results he reports from his practice and follow-up, not a randomized trial presented in the excerpt; they should not be read as guaranteed outcomes for other patients.

The food demonstration leads to a distinction between glycemic index and glycemic load. The index compares a carbohydrate’s effect with pure glucose, while load also accounts for portion size. Unwin argues that packaging and the word ‘fruit’ can create a health halo around products with substantial sugar content. He recommends looking beyond added sugar to total carbohydrate and serving size, because starch can be broken down into glucose even when a food is not sweet. The examples make label reading more concrete, though the displayed teaspoon equivalents are specific to the portions used in the studio.

Unwin says the turning point in his thinking came after years of following clinical guidelines while seeing the health of his patient population deteriorate. He began asking whether his advice was actually helping and whether lifestyle factors deserved more attention. The interview presents this as a clinician revisiting his own assumptions, rather than as a claim that medication has no role. His broader point is that doctors should notice when familiar advice fails and be willing to examine what patients are eating and how their health changes over time.