If dizziness strikes after meals, try eating smaller but more frequent meals. It may also help to limit how many rapidly digested carbohydrates you eat in one sitting, such as white bread and other foods made with highly refined flour, white rice, potatoes, and sugary beverages. Get moving.
https://www.health.harvard.edu/heart-health/dizzy-spells-when-you-stand-up-when-should-you-worry

