Which of the following is NOT a benefit of legumes?

Legumes are a highly nutritious food group known for their numerous health benefits. They are particularly recognized for their ability to regulate blood sugar levels, primarily due to their low glycemic index and high fiber content, which helps slow down the absorption of glucose in the bloodstream. Additionally, legumes have been shown to reduce cholesterol levels because they contain soluble fiber that binds to cholesterol in the digestive system, helping to lower total cholesterol levels and improve heart health. Furthermore, incorporating legumes into one's diet can contribute to blood pressure regulation, as they are rich in potassium and other vital nutrients that help support healthy blood vessel function.

However, while they offer many health benefits, there is limited scientific evidence directly linking legumes to enhancing cognitive function. Though a diet rich in whole foods, including legumes, is beneficial for overall health and might support brain health indirectly, the specific cognitive enhancement attributed to legumes alone is not well-established. Therefore, identifying this lack of direct evidence makes the choice regarding cognitive function the most accurate option when stating what is not a recognized benefit of legumes.