Functional Nutrition Counselling Functional Nutrition is a modality that works to not just support, but to educate you aboutwhat’s going on in your body and how making uniquely targeted diet and lifestyle modifications can shift your inner terrain and help you meet your health goals. The roots that we look for in root-cause resolution exist in an environmental or biological terrain. Just as the roots of a tree grow in soil, the roots of a health issue grow in an environment that is conducive to that particular problem. Health issues (symptoms and complaints) always have a root cause.