Dietary Interventions Show Promise for Type 2 Diabetes and Obesity Management

A groundbreaking⁢ study presented at ⁣ENDO ‍2025, the Endocrine Society’s ‍annual meeting in San Francisco, California, reveals that intermittent energy restriction (IER), time-restricted eating ⁣(TRE), and continuous energy restriction (CER) can all significantly improve blood sugar levels and body ⁤weight in individuals with obesity and type 2 diabetes. This research marks the first direct comparison of ⁤thes three distinct dietary approaches in this patient population.

The study, conducted at The First Affiliated⁤ Hospital of Zhengzhou University, involved 90 participants randomly assigned to either IER, TRE, or CER ⁤for 16 weeks, ⁤with consistent ⁣weekly⁢ caloric intake across all groups. While all interventions lead to improvements in HbA1c levels and adverse⁢ events ⁢were⁤ comparable,‍ the IER group demonstrated superior benefits. ⁢Specifically,IER was associated‍ with greater reductions in fasting ‍blood glucose,enhanced insulin sensitivity,lower triglyceride levels,and notably,higher adherence rates among ⁤participants.

“The research fills a gap in directly comparing 5:2 intermittent energy restriction with a 10-hour‍ time-restricted eating in patients with obesity and type 2 diabetes,” stated ‍Haohao Zhang, Ph.D., chief physician at The First Affiliated Hospital of Zhengzhou University. “the findings provide scientific⁣ evidence for clinicians to choose appropriate dietary strategies when treating ‍such patients.”

The trial, which included 63 ‍participants who completed the intervention, comprised individuals with an average age of 36.8 years, a mean diabetes duration of 1.5 years, ‍a baseline BMI⁤ of 31.7 kg/m², and an HbA1c of 7.42%. At the study’s conclusion, although no statistically notable⁣ differences in‍ HbA1c reduction or weight loss were observed between the groups, the IER group exhibited the largest absolute decreases in both metrics.

Further analysis indicated that IER significantly outperformed TRE and CER in reducing fasting blood glucose and triglycerides, ⁢and in improving the⁣ Matsuda‍ index, a key‍ indicator of whole-body insulin ⁢sensitivity. Uric acid and liver enzyme‍ levels remained unchanged across all ⁤groups. Hypoglycemia was reported in a small number of participants across all intervention ‍arms. Adherence rates were highest in the ‍IER group (85%), followed closely by CER (84%), and then TRE (78%), with significant differences noted between IER/CER and TRE.

These findings underscore the feasibility and effectiveness of various dietary⁢ strategies‍ for managing obesity and type 2 diabetes, offering valuable insights for clinical⁤ practice. As research continues to explore personalized nutrition and⁤ its impact on metabolic health,⁢ these dietary interventions are poised to remain central to evidence-based treatment plans, offering a lasting resource for‍ both clinicians and ⁢patients seeking effective management of these prevalent conditions.