Taking antibiotics? Calcium-rich dairy products (such as milk, cheese, and ice cream), antacids, calcium supplements, and calcium-fortified foods can all lessen the effectiveness of antibiotics, particularly tetracycline.
Taking blood pressure or cholesterol medicine? Grapefruit and grapefruit juice can interfere, allowing the medication to enter your bloodstream too quickly.
These are just two examples. If you are taking medications, check with your health coach to see if there are any foods you should avoid.