Whole-Wheat Bread Daily Can Aid Weight Loss and Heart Health, Study Says
A new study reveals that consuming whole-wheat bread and whole grains daily can promote weight loss, reduce waist size, and lower heart disease risk factors.
Bread has long been considered the sworn enemy of anyone trying to watch their weight, but a major new study suggests that a daily sandwich made from two slices of whole-wheat bread can actually lead to weight loss, a reduced waistline, lower cholesterol levels, and a decreased risk of heart attacks.
Study Insights and Whole Grains
Published in the European Heart Journal and featured in the Daily Mail, researchers analyzed all existing studies on the topic, including 87 clinical trials examining the link between whole grains, weight loss, blood pressure, and heart health. Whole grains retain all parts of the grain that are stripped away during industrial processing, such as in white bread. According to the charity Heart UK, foods like whole-wheat bread, oatmeal, and whole-grain pasta preserve essential components: dietary fiber, B-complex vitamins, minerals, and phytonutrients.
Scientists focused on determining the correct daily amount of whole grains needed to support health. "This left an important practical question unanswered: how many whole grains do people need to eat to significantly improve their cardiovascular health?" noted Dr. Haldeh Tutunchi, associate professor of nutritional science at Tabriz University of Medical Sciences in Iran and lead author of the study.
Weight Loss and Blood Pressure Reduction
Experts reviewed data from over 6,500 individuals across Asia, Europe, the US, Canada, and Brazil, finding that consuming just 48 grams of whole grains per day—equivalent to two slices of whole-wheat bread or a bowl of oatmeal—was linked to an average reduction of about 0.2 kilograms in body fat and a 0.22-centimeter decrease in waist circumference. According to the researchers, such measured consumption leads to a reduction in visceral fat, which is linked to a lower risk of type 2 diabetes and cancer.
"Our findings provide a practical indication of the amount of whole grains that may be required to achieve significant improvements in cardiovascular disease risk factors," concluded Dr. Tutunchi. "Increasing whole-wheat consumption is a simple, accessible, and relatively inexpensive dietary strategy that can complement lifestyle interventions and other medical treatments."
In addition, researchers observed a decrease in total cholesterol, primarily driven by a reduction in LDL, known as "bad cholesterol," as well as lower triglyceride levels and a drop in systolic blood pressure. However, the most significant improvements were recorded when whole grain consumption rose to 60 to 100 grams per day—equivalent to about four large slices of bread—where the drop in blood pressure was three times greater alongside even larger reductions in cholesterol and blood lipids.
