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Get your omega-3s

Studies suggest that low levels of omega-3 fatty acids can contribute to postpartum depression, and that supplementing your diet  could lessen symptoms. “The doctors we work with really love to suggest omega-3 fatty acids,” Waller says. You can get omega-3 fatty acids from supplements, as well as some foods, such as seafood, flaxseed oil, fish oil, chia seeds, walnuts, soybeans and spinach. If you’re lactating, aim for 625 mg of DHA and 410 mg of EPA every day.

Also, up to 10 percent of women develop postpartum thyroiditis, which can cause hypothyroidism resulting in fatigue and depression. For this reason, any woman who experiences symptoms of depression in postpartum should be checked for thyroid disorders. To be thorough, also ask to be tested for anemia and B vitamin deficiency.