Study highlights benefits of whole grains

A meta-analysis published in September 2026 in the European Heart Journal found that eating unrefined grains daily can lower several markers of cardiovascular risk. The study, led by researchers from Tabriz University in Iran, challenges common diets that eliminate carbohydrates without differentiating between healthy and unhealthy types.

Whole grains improve health markers

The research compiled data from 87 clinical trials involving more than 6,500 participants across regions from Brazil to Asia. It found that consuming four to six portions of whole grains daily—such as a bowl of oatmeal, a whole-grain sandwich, and brown rice—can lead to significant improvements in health indicators.

Health benefits increase with intake

Each additional serving of whole grains was associated with a consistent decrease in total cholesterol, triglycerides, blood pressure, waist circumference, and weight. The most noticeable effects were seen in weight loss, waist size, and cholesterol levels, with smaller but still positive changes in blood pressure and blood sugar.

Fiber in whole grains drives benefits

The health benefits of whole grains are largely due to the dietary fiber found in the bran and germ of the grain. This fiber helps regulate digestion, reduce inflammation, and improve overall metabolic health, contributing to the observed cardiovascular benefits.