One of the dramatic demonstrations of the role of nutrition in mental health came from studies Rucklidge and colleagues did following two earthquakes in Christchurch, New Zealand, in 2010 and 2011. Participants who received high doses of micronutrients reported significantly lower levels of anxiety, depression, and posttraumatic stress symptoms. The benefits were sustained at a one-year follow-up. Similar results were found by Rucklidge’s colleague, Dr. Bonnie Kaplan, following a flood in Calgary in 2013.

Source: Micronutrients in Psychiatry: Sound Science or Just Hype? | Psychology Today