Eliminating toxins and possible allergens from your diet helps reduce intake of bad stuff, and by necessity, increases your intake of really great stuff, including nutritious greens, root veggies, fresh fruits and whole grains. You can do this with the supervision of a naturopath or other doctor, but you can also do your own version which will save money and introduce a lot of great habits that you may find yourself wanting to stick with after your detox period is over.