Overview
- Mice given a choice favored bread, wheat, or rice over standard chow and gained both body weight and fat mass without eating more.
- Respiratory gas measurements showed energy expenditure fell, indicating slower calorie burning drove the weight gain rather than overeating.
- Tests found higher fatty acids in the blood, lower essential amino acids, more fat stored in the liver, and greater activity of genes that build and move fats.
- Rice produced effects similar to wheat, suggesting the outcome reflects a strong pull toward carbohydrate-rich foods rather than something unique to wheat.
- Stopping wheat intake quickly reversed the weight gain and metabolic shifts, and the team now plans human studies to test whether these mouse results apply and how whole grains, fiber, processing, and food combinations shape responses.