Investigative journalist Donal MacIntyre has detailed a personal 21-day fasting regimen that he claims resulted in a three-stone weight loss and the reversal of his pre-diabetes. MacIntyre, 58, described his experience in an article published by the Morning Mail newsletter.

MacIntyre, who previously identified as obese with a BMI of 36 at 17.5 stone, opted for the fasting method over what he described as "fat jabs." His regimen consisted solely of water and coffee for the duration of the fast. He also received IV drips containing salt, minerals, and vitamins A and B every five days, administered by Dr. Ash Kapoor's clinic. Dr. Kapoor is the author of "Autophagy: Release Our Internal Larders."

The journalist documented his journey, emphasizing the determination, resilience, and self-control required to adhere to the strict fasting protocol. He stated that the method proved more effective than other weight-loss interventions and has led to the reversal of his pre-diabetes, to the point where he no longer requires knee surgery. MacIntyre's account was published on August 13, 2026.