We all need that sunshine nutrient but perhaps women are more directly affected by winters lack of sun. It turns out that women who experience Seasonal Affective Disorder (SAD) also experience a worsening of Premenstrual syndrome (PMS).
Did you know that light is a nutrient in the body, when it hits the retina it directly impacts our endocrine system through our hypothalamus and pineal gland. As per Women's Body's, Women's Wisdom By: Christian Northrup M.D, "In one study, patients with PMS responded significantly to treatment with bright light. Their weight gain, depression, carbohydrate craving, social withdrawal, fatigue, and irritability were reversed with two hours of full-spectrum bright light in the evening."
This has all to do with our serotonin levels, and serotonin levels are linked to sunlight exposure. With more sunlight we will naturally reduce PMS and depression. Of course there are other contributing factors but a large one is winter. So get yourself a Happy Light which is a full spectrum light therapy lamp, this is the most affordable one I have been able to find the best brand I have been able to find is Verilux. The Circadian Optics Lattis Light Therapy Lamp is also a nice more decorative design.
Our menstrual cycle has four phases you can learn more about those here.