Sardines are one of the most nutrient-dense foods on the planet, loaded with Vitamin D, calcium, protein, and Omega-3s. Dr. Gundry explains that because they are small and low on the food chain, they are also very low in mercury.
Surprisingly, Dr. Gundry reveals that the only patients who achieve a normal Omega-3 index without supplements are daily eaters of sardines, herring, or mackerel. Even patients from Seattle or Vancouver who eat huge amounts of salmon all week still fail to reach that optimal index without help.
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