Food prices are going up, incomes generally aren't, but eating healthy on a budget is absolutely possible. Instead of reaching for fast food that might seem cheap to your wallet but comes at a cost to your body, focus on buying whole foods and cooking them at home. The Environmental Working Group's guide to Good Food on a Tight Budget gives advice on making it affordable.
Rice bought in bulk is a bargain, and super-versatile: Turn it into a salad, add it to soup, or use it as a side dish. Brown rice has twice the fiber of white, but to save money you can mix white and brown together.