Omega-3s, those fatty acids found in anchovies, walnuts, chia seeds, and sardines, are supposed to make your heart pump stronger, your brain think sharper, and have turned into a multibillion dollar supplement industry. In researching his latest book, “The Omega Principle,” best-selling author Paul Greenberg spent a year eating a fish-focused diet and discovered that doing so is good for the health of both our body and our planet.
