Mussels are loaded with some of the highest naturally occurring levels of brain-protecting vitamin B12 on the planet. That makes the mollusk an important food source, considering that a significant portion of the U.S. population is B12 deficient. So what's the nutrient's mood-saving trick? Maintaining a healthy level preserves the myelin sheath that insulates your brain cells, helping your brain stay sharp as you grow older.
Mussels also contain trace nutrients that are important to balancing your mood, including zinc, iodine, and selenium, things vital to keeping your thyroid, your body's master mood regulator, on track. An added benefit? Mussels are a healthy choice for you and the environment, which isn't always the case when it comes to fish. Just be sure to look for farmed—not wild—mussels raised in the United States.
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