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Dairy in Plant-Based Diets May Better Stabilize Blood Glucose, Study Finds

A clinical study published in the journal Clinical Nutrition suggests that consuming more than 500 grams of dairy products daily helps stabilize blood sugar levels in healthy adults without causing weight gain, according to research led by Professor…

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A clinical study published in the journal Clinical Nutrition suggests that consuming more than 500 grams of dairy products daily helps stabilize blood sugar levels in healthy adults without causing weight gain, according to research led by Professor Vimal Karani of the University of Reading.

The investigation was conducted in India with 30 healthy adult volunteers who followed two distinct diets over a 14-day period. Both meal plans matched precisely in total caloric content and macronutrient distribution. However, the first group consumed 558 grams of dairy products each day—including milk, yogurt, and cheese—while the second group avoided dairy entirely, relying instead on plant-based alternatives like soy milk and tofu. Throughout the two-week trial, participants wore continuous glucose monitors on their arms that recorded their blood sugar fluctuations every 15 minutes.

Biochemical Markers and Blood Sugar Regulation

Blood samples collected at the conclusion of the study revealed distinct metabolic differences between the two dietary groups. Participants in the dairy-inclusive group exhibited elevated levels of acetyl carnitine, a molecule that assists the body in utilizing fat as an energy source while mitigating cellular damage linked to hyperglycemia. Conversely, individuals in the completely plant-based group showed higher concentrations of phenylalanine, an amino acid that can interfere with normal sugar management when present in excess amounts. These molecular variations help explain the divergence in blood sugar stability observed across the two cohorts.

Metabolic Health Implications in High-Risk Regions

While strict plant-based diets have grown increasingly popular for overall wellness, the findings indicate that retaining dairy products within a largely vegetarian diet offers distinct metabolic advantages. Professor Karani notes that in regions like India, where cultural practices drive high rates of veganism, the prevalence of type 2 diabetes remains among the highest globally. Maintaining specific animal-derived foods like milk, yogurt, and cheese inside a plant-focused diet provides a balanced approach to protecting metabolic health without risking weight gain.

Frequently Asked Questions

How much dairy was used in the study?

The dairy group consumed 558 grams per day of products including milk, yogurt, and cheese.

What was the primary finding regarding blood sugar?

Participants consuming over 500 grams of dairy daily achieved better blood sugar stability without experiencing changes in body weight over the 14-day period.

Where was the research published?

The findings were published in the scientific journal Clinical Nutrition and led by researchers from the University of Reading.

About the author: Dr Natalie Singh - Health Editor

Board‑certified internal‑medicine physician and MPH. Natalie authored peer‑reviewed studies on infectious disease and served as medical editor. “Dr. Natalie Singh delivers evidence‑based health news, medical breakthroughs, and expert wellness guidance.”