BP Coffee. Does it break our fast, or not?
Bulletproof coffee, using unrefined, upgraded mct oil and pasture butter, provides the purest cleanest form of energy/fuel that you can get, while NOT breaking your physiological fast.
The reason BPC does NOT break the fast is because fat, unlike protein and carbohydrates, does not induce the same kind of insulin-blood glucose response.
Consuming fat alone does not raise blood sugar levels, while carbohydrates eaten along with fat does. With more specificity, in the ketogenic static, consumption of saturated or unsaturated fats do not raise your blood sugar because calories from fat are not converted into glucose immediately.
Normally, they are turned into energy by a process called gluconeogenesis which takes place in the liver. But our livers do not use gluconeogenesis but uses ketogenesis which converts ingested fat into ketones.
Is it calories? Yes.
Does it break your fast? NO.