Food combining has to do with helping your body properly digest and process the things you eat. If your body is not able to process what you eat, whether healthy food choices or just junk, you will end up with many very serious health issues. Foods that are high in sugar, processed, refined, and packaged are all acidic and send the body's pH out of balance. This will keep the body from absorbing the essential nutrients of the things you eat and leave the door open to accelerated aging, disease and fatigue.