In the hierarchy of human health, nature has provided a clear roadmap. As established in the CDC’s Powerhouse Fruits and Vegetables (PFV) ranking, the "gold standard" for nutrition is found in dense, leafy greens like watercress, Chinese cabbage, and Swiss chard. These foods are packed with life-sustaining vitamins and minerals, scoring a perfect or near-perfect 100 on the nutrient-density scale.
At the opposite end of this spectrum lies "junk food"—ultra-processed items that are high in calories but score effectively zero in nutrient density. In Canada, a growing public health crisis suggests that it is time for our tax code to reflect this biological reality. If we want a healthier nation, we must stop subsidizing poor health through low prices and start taxing junk food to support a "Powerhouse" diet