Does have a number of oat milk benefits that make it an attractive choice among other plant-based alternatives. First, it is rich in beta-glucans, a soluble fiber that helps lower cholesterol and improve heart health. Second, oat milk typically contains more carbohydrates than, say, almond milk, making it a great source of energy, especially in the morning. It is also easier to digest and rarely causes allergies, which is important for those with sensitive digestion.