A new study has found that eating almonds every day may help improve memory, cognitive performance, and blood sugar control among people with prediabetes. Researchers say this simple dietary habit could offer both brain and metabolic health benefits, potentially reducing the risk of developing type 2 diabetes while supporting long-term cognitive function.
The research focused on middle-aged adults with prediabetes, a condition in which blood sugar levels are higher than normal but not yet high enough to be classified as diabetes. Prediabetes affects millions of people worldwide and is increasingly being linked not only to diabetes risk but also to cognitive decline caused by insulin resistance, inflammation, and oxidative stress.
In the study, conducted over 24 weeks, participants were divided into two groups. One group followed a healthy diet and exercise plan while incorporating almonds into their daily meals, while the control group followed a similar lifestyle programme without almond supplementation. Researchers monitored changes in cognitive performance, blood sugar levels, body composition, and various health markers throughout the study period.
The findings revealed that participants who consumed almonds daily demonstrated notable improvements in executive function and processing speed—two key aspects of cognitive performance linked to decision-making, focus, and mental agility. Researchers observed better overall brain function compared to those who did not consume almonds regularly. The results suggest that almonds may play a role in supporting brain health, particularly among individuals at risk of metabolic disorders.
Beyond cognitive benefits, the almond group also experienced significant improvements in blood sugar management. Participants recorded lower fasting glucose levels, improved HbA1c readings, and better post-meal blood sugar control. Researchers believe these changes may help slow or prevent the progression from prediabetes to type 2 diabetes. Previous studies have similarly shown that almonds can improve insulin sensitivity and help regulate glucose levels in people with prediabetes.
The study further reported positive effects on body weight and overall metabolic health. Individuals who consumed almonds showed reductions in body weight, body mass index (BMI), waist circumference, and body fat levels. Improvements were also observed in cholesterol levels, indicating broader cardiovascular benefits.
Experts attribute these outcomes to almonds’ rich nutritional profile. Almonds contain protein, dietary fibre, healthy monounsaturated fats, magnesium, antioxidants, and vitamin E. These nutrients help stabilize blood sugar levels, reduce inflammation, combat oxidative stress, and support healthy brain function. Researchers also found increased vitamin E levels and reduced markers of oxidative damage among participants consuming almonds regularly.
Health professionals emphasize that almonds are not a cure for diabetes or cognitive decline, but they can be a valuable addition to a balanced diet and active lifestyle. A daily serving of around 30–40 grams, roughly a small handful, was used in the study and was associated with the observed health benefits.
The findings add to growing evidence that simple dietary changes can have meaningful health impacts. For individuals with prediabetes, incorporating almonds into everyday meals may offer a practical and nutritious way to support blood sugar control, maintain a healthy weight, and promote better brain health as they age.
