Study Suggests Removing Sucrose from a Low-Fat Diet May Harm Gut Health

A study presented at ENDO 2026, the annual meeting of the Endocrine Society, examined the effects of a sucrose-free, low-fat diet on mice over a 16-week period. The findings, which have not yet been peer-reviewed, indicate differences in metabolic and gut health indicators between mice fed a diet without sucrose and those fed a diet containing sucrose.

Study Design and Methodology

Researchers divided twelve healthy mice of similar weight into two groups. One group was fed a low-fat diet containing sucrose (sugar), while the other group received a low-fat diet without sucrose. Both groups received similar amounts of calories.

The study was conducted over 16 weeks. Body and liver weights remained similar between the two groups at the conclusion of the study.

Key Findings

According to the presented data, mice on the sucrose-free diet exhibited the following compared to the control group:

• Glucose and Insulin Regulation: Impaired glucose tolerance and reduced insulin sensitivity.
• Hormonal Changes: Lower fasting insulin levels and changes in hormones involved in metabolism and appetite regulation.
• Gut Microbiome: Lower levels of beneficial bacteria, such as Lactobacillus murinus, and increased levels of bacteria associated with inflammatory conditions.
• Intestinal Health: Signs of inflammation in the colon.
• Liver Health: Signs of fatty liver disease and liver inflammation.

Commentary

"Based on the study results, completely removing sucrose from a low-fat diet may disrupt gut health and promote inflammation and metabolic dysfunction."

Rasheed Ahmad, Ph.D., principal scientist at the Dasman Diabetes Institute, emphasized the importance of balanced dietary carbohydrates for gut and immune homeostasis.

Faisal Hamed Al-Refaei, MD, Acting Director General of the Dasman Diabetes Institute, commented that the study reflects the institute's commitment to evidence-based research.