Exposure to light naturally increases feel good chemicals in our brains and bodies, such as serotonin. When the days shorten in the fall and you have less exposure to sun and natural light, you have a physiological setup for feeling a bit blue or moody.
This seasonal change isn’t in your imagination—seasonal affective disorder (SAD) is real and affects tens of thousands of people (maybe more) each year. As the summer ends, it’s not uncommon to experience fatigue, lethargy, weight gain, carbohydrate craving, excessive sadness, and changes in your libido. Luckily, there are some easy things you can do to alleviate seasonal symptoms.
In the winter, we tend to make more melatonin. Melatonin is a natural substance created by the brain when it’s dark. And it aids with sleep. Too much melatonin can leave you feeling sluggish and mentally foggy. When you add this to the fact that our circadian rhythms, those that govern our sleep and wake cycle, are different in winter than in summer, it’s easy to understand why you might experience fatigue.
To counter this, you need to increase the amount of full spectrum light you are exposed to with full spectrum light bulbs and/or a light box. You will feel some relief from sleepiness and even premenstrual moodiness or irritability. All you need to do is expose yourself to regular doses of full spectrum light generated ambiently. Although light is absorbed by the eyes, you never stare at a light box or light bulb because it can cause eyestrain, headaches, and other symptoms. You just sit somewhere where the light reaches you out of the corner of your eye. Light boxes can be used during the day on a cloudy day, in the late afternoon, or early morning or evening to extend the day.
There are numerous studies that have demonstrated the connection between full spectrum light and serotonin levels. A drop in melatonin enhances feel-good hormones, including endorphins and serotonin, which help you feel both alert and calm. This transformation occurs in the brain as a result of being in more light. That’s why getting outside at noon for a half hour walk on a sunny day during the winter months will lift your mood greatly. Hold the sunglasses whenever possible. They block some of the colors of the light waves.
Help for Seasonal Blues
You can keep the seasonal changes from impacting you negatively by following these simple suggestions:
- Getting enough vitamin D is critical in winter months. I’ve written extensively about vitamin D, so I’ll just briefly mention that vitamin D levels drop in the winter because the body makes it after being exposed to sunlight. The vitamin D research is so compelling when it comes to the connection between depression and vitamin D deficiency. (Vitamin D deficiency is also linked to certain cancers, like breast and colon; a weakened immune system; poor bone health; and much more.) Make sure to get 1,000–4,000 IUs per day in the winter, especially if you tend to be vitamin D deficient (less than 32 ng/ml.).
- In addition, make sure you’re getting enough essential fatty acids, which are found in cold water fish (like salmon), nuts, seeds (like flaxseed), and many plants. Aim for 500–2,000 IUs of fish oil or flaxseed oil per day, or some combination of the two.
- Eliminate refined sugar, refined flour, and other processed foods from your diet. Eating carbs increases serotonin, which you might find in short supply if you’re not getting enough natural light. Be aware that while this may give you an initial pick-me-up, the drop afterwards just isn’t worth it. Plus these foods deplete vital vitamins and minerals that help the body handle stress and build immunity.
- Invest in full spectrum light bulbs and consider purchasing a light box, especially if you live in a northern latitude.
- Practice stress reduction or energy medicine. Women who practice meditation or other methods of deep relaxation are able to alleviate many of their PMS and seasonal blues symptoms. Relaxation of all kinds decreases the stress hormones cortisol and epinephrine levels in the blood and helps to balance your biochemistry.
- Get at least twenty minutes of aerobic-type activity three times a week. Brisk walking during sunlight hours—especially without sunglasses so your eyes absorb the light—can boost endorphins. It’s estimated that half of all depression cases can be helped through exercise alone.
It’s not uncommon to feel a shift in energy and mood as the seasons change. However, if these symptoms are excessive, they shouldn’t be ignored. Seek the help of a professional if they are severe. In the meantime, adopt as many of my suggestions as you feel comfortable with. Not only will they chase away the winter blues, they’ll help you stay healthy at the cellular level, too.
Learn More — Additional Resources
- Women’s Bodies, Women’s Wisdom, by Dr. Christiane Northrup, Chapters 5 and 18