The blame also rests with regulators like the FDA, who for decades promoted a food pyramid that was basically upside-down in terms of what was healthy; who for decades promoted that partially-hydroginated oils (trans-fats) were preferable to natural saturated fats; who encouraged a "low fat" diet that prompted food producers to substitute sugar for fat to make foods tasty and consumers to consume an unhealthy high-starch, high-sugar diet and a nearly manic avoidance of fat.