Beta-glucans play a critical role in the immune response by enhancing the activity of key immune cells. These polysaccharides, found in oats, barley, and certain fungi, stimulate macrophages and natural killer cells, which are essential for defending against pathogens. Research indicates that beta-glucans can also modulate inflammatory responses and promote overall immune health. By enhancing gut health and supporting microbiome balance, they contribute to a robust immune system. Therefore, including beta-glucans in the diet can be a simple yet effective way to bolster immune function.