Try to eat whole foods and foods that are minamally processed. Avoid most foods that are full of chemicals and preservatives, and avoid foods that contain lots of sugar or salt.
Some best bets are unsalted nuts, sunflower seeds, pumpkin seeds, dried fruits, tiny pieces of dark chocolate (instead of milk chocolate) with at least 70% cacao, eat a few raw mushrooms (of any kind, try some different ones like those cute itty bitty Enoki Mushrooms. Unsalted tortilla chips cooked with expeller pressed monsaturated oil (instead of partially hydrogenated oil) with some fresh salsa, or raw fresh veggies such as carrots, cauliflower, red bell peppers, celery, broccoli and asparagus with some dip made from non-fat plain yogurt, or some of Trader Joe’s fat free spicy black bean dip, or some hummus.
NCIS is coming on in four minutes. Back later, with more ideas : )