How could diet affect premenstrual dysphoric disorder?

There is little data to support a strong relationship between diet and PMDD. However, dietary patterns that emphasize eating a variety of whole foods (e.g., fruits, vegetables, nuts), while reducing the intake of ultraprocessed foods, salt, caffeine, and alcohol, are associated with a lower risk of premenstrual symptoms.^[1][2] Diets rich in calcium, zinc, magnesium, and B vitamins may also reduce the risk of PMS.^[2][3] Whether this data applies to PMDD is unclear, but adopting a healthful diet is unlikely to worsen the condition and could provide benefits.