Almond "Appetizer" Effect on Glucose Tolerance Test (GTT) Results

Area of Science:

• Metabolic Health
• Nutritional Science
• Diabetes Research

Background:

• The acute impact of dietary interventions on glucose intolerance is not well understood.
• Prediabetes and impaired glucose tolerance pose significant health risks.

Purpose of the Study:

• To evaluate the effect of a low-calorie almond preload on glucose tolerance in individuals with impaired glucose metabolism.
• To assess the potential of an almond appetizer to mitigate postprandial hyperglycemia.

Main Methods:

• Twenty adults with prediabetes or elevated 1-hour glucose levels participated.
• Participants underwent two oral glucose tolerance tests (GTTs): one standard and one preceded by a half-ounce almond preload.

Main Results:

• The almond preload significantly reduced 1-hour plasma glucose by 19.4% (37.1 mg/dL) compared to the standard GTT (P < .001).
• The area under the glucose curve was reduced by 15.5% (P < .001) with the almond preload.
• A notable hypoglycemic effect was observed in several participants.

Conclusions:

• A low-calorie almond preload demonstrates potential for reducing postprandial hyperglycemia in individuals with prediabetes.
• Further research is warranted to establish the role of premeal almond appetizers in prediabetes self-care.