Sugars, saturated fats, and white breads are all acid-causing foods while fresh fruits and vegetables are naturally alkaline. So what does that matter? A healthy acid/alkaline balance preserves optimum health and well-being, increased immune function and weight loss. Problem is: the average diet tips the scales when it comes to being highly acidic. To up your alkaline, insert a few of these basic alkaline foods into your diet: fruits, vegetables, sea vegetables, grains, miso, tofu, spices, sprouted beans and nuts, and dairy foods.