Aunt Li's experience with high blood sugar and mistaken belief in oatmeal being unhealthy. 2. Oatmeal as a Nutritious Food: Whole grains provide more nutrients compared to refined grains.

3. Research on Oatmeal and Cholesterol: A study showed that oatmeal intake decreased cholesterol levels. 4. Benefits of Oatmeal for Blood Sugar Control: Beta-glucan in oatmeal helps regulate blood sugar levels.

5. Three Types of Oatmeal to Avoid: Instant oatmeal, mixed oatmeal products, oat flour have added sugars or lose nutritional value.

6. Other Unhealthy "Healthy Foods": Refined oat-based products, fresh fruit juice, fruit and vegetable chips, walnut milk, caterpillar fungus may have negative health effects.

7. Tips for Choosing Oatmeal: Check ingredients, appearance, and nutritional information to select a healthy product.

In summary, oatmeal is a nutritious grain that can help lower cholesterol and regulate blood sugar. However, it is important to choose the right type of oatmeal to avoid added sugars or loss of nutrients.