A recent study suggests that consuming oatmeal for as little as two days can have a significant positive impact on heart health markers. Researchers at the University of Bonn in Germany conducted a trial where adults with metabolic syndrome, a condition linked to increased risk of diabetes, adhered to a calorie-reduced diet primarily consisting of oatmeal for a short period.
Participants ate boiled oatmeal three times daily, consuming about half their normal caloric intake and adding only fruits or vegetables. A control group followed a similar calorie-restricted diet without oats. While both groups saw benefits, the oat diet group experienced a notable improvement in cholesterol levels, which remained stable after six weeks.
Study author Marie-Christine Simon reported that LDL, or "bad," cholesterol levels decreased by an average of 10% in the oatmeal group. Participants also lost an average of two kilograms and saw a slight reduction in blood pressure. The study, published in Nature Communications, indicates that the diet influenced gut microorganisms, leading to these favorable outcomes.
Experts note that oats' prebiotic fiber supports beneficial gut bacteria, which can help reduce LDL cholesterol production. Oats are also a whole grain, low in saturated fat and rich in fiber and plant-based protein. However, individuals monitoring blood sugar, particularly those with diabetes, are advised to be cautious due to oats' carbohydrate content and to pair them with protein and fiber from vegetables and nuts.
Registered dietitian Megan Wroe confirmed that oat consumption appears to lower cholesterol. She recommends choosing steel-cut or rolled oats, using fruit for sweetness, and adding protein sources like chia seeds, flax seeds, protein powder, or Greek yogurt to balance the meal.