Experiencing anxiety is all too common for the majority of us. And that may be because the majority of us—or 75 percent of Americans—are deficient in magnesium due to modern farming and food processing, says Dr.Carolyn Dean, MD, ND, and a medical advisory board member of the Nutritional Magnesium Association. "Serotonin, the feel-good brain chemical that is boosted artificially by some medications, depends on magnesium for its production and function," she explains. "Magnesium is known as the anti-stress, anti-anxiety mineral for this reason." In addition to reducing anxiety, studies show that magnesium can also help with depression as well, she notes. Food sources that are high in magnesium (especially if farmed organically and locally) include green leafy vegetables such as spinach and chard, pumpkin seeds, almonds and even dark chocolate.