Intermittent Fasting Cut Obese Adults' Weight 7.8% as Gut Bacteria and Brain Activity Shifted
Updated
Updated · ScienceDaily · May 31
Intermittent Fasting Cut Obese Adults' Weight 7.8% as Gut Bacteria and Brain Activity Shifted
6 articles · Updated · ScienceDaily · May 31
Twenty-five obese adults in China lost an average 7.6 kilograms—about 7.8% of body weight—after a 62-day intermittent energy restriction program, with body fat, waist size and several metabolic markers also improving.
Those microbial shifts tracked with activity in specific brain areas, suggesting weight loss may involve a coordinated gut-brain response rather than calorie reduction alone.
The study was small and correlational, so it cannot show whether gut bacteria drive brain changes or the reverse, but it adds to evidence that fasting may reshape the microbiome in ways linked to weight control.
Is the secret to controlling appetite hidden not in our willpower, but within our gut microbiome?
Could specific gut bacteria be the key to turning our fat-storing cells into fat-burning ones?
Can diet rewire our brain and gut to fight obesity as effectively as popular weight-loss drugs?
How Intermittent Fasting Reshapes Weight, Gut, and Brain: Insights from 2025-2026 Studies
Overview
Recent breakthroughs from 2025-2026 have shown that intermittent fasting can lead to significant weight loss, as demonstrated in a study where 25 obese adults in China lost an average of 7.6 kg over 62 days using an intermittent energy restriction protocol. This weight reduction was closely linked to positive changes in the gut microbiome, with increases in beneficial bacteria and decreases in harmful ones. These gut changes were also connected to shifts in brain activity, particularly in regions related to appetite and self-control, highlighting the powerful and dynamic relationship between weight, gut health, and brain function during intermittent fasting.