Kevin Ng, MD
As we transition from winter to spring, our bodies undergo a natural shift, responding to longer daylight hours and seasonal changes in food availability. This period offers a unique opportunity to optimize our health by harnessing the power of morning sunlight, strategic nutrition, and circadian rhythm alignment. Here’s how you can make the most of this seasonal transition.
The Power of Morning Sunlight for Circadian Harmony
During winter, many of us fail to receive adequate sunlight, causing issues such as plummeting vitamin D levels and corresponding immune struggles, including increased cold and flu rates, seasonal affective disorder (SAD), weight gain, and low energy . Some rely on short getaways to sun filled destinations or sun lamps to mitigate SAD and maintain circadian rhythm balance. However, as spring arrives, natural morning sunlight becomes essential in regulating sleep, energy levels, and overall well-being. Early morning light exposure signals the brain to regulate melatonin and cortisol production. Research has shown that morning sunlight plays a direct role in reinforcing a healthy sleep-wake cycle and maintaining stable energy throughout the day .
Morning sunlight offers additional benefits beyond circadian regulation. This early-day exposure provides a natural form of red-light therapy, influencing mitochondrial function, reducing inflammation, and stimulating collagen production . Incorporating a habit of direct morning light without sunglasses can enhance mood, improve sleep quality, and support metabolic health .
Full-Spectrum Light and Its Role in Wellness
Full-spectrum lighting, which mimics natural sunlight, has been associated with improved cognitive function and mood. Studies suggest that classrooms and workspaces equipped with full-spectrum lighting contribute to better performance and reduced absenteeism . For those who spend long hours indoors, integrating full-spectrum light sources can bridge the gap between indoor and outdoor light exposure, promoting a healthier circadian rhythm and reducing eye strain.
Moderate UV exposure from sunlight plays a role in immune modulation through vitamin D synthesis and neurotransmitter regulation, particularly in the production of serotonin and dopamine . These neurotransmitters are vital for mood stability and mental clarity, reinforcing the importance of regular outdoor activity.
Nutritional Strategies for Seasonal Adaptation
As daylight hours increase, so does the variety of fresh, nutrient-dense foods available. Aligning dietary choices with seasonal shifts helps the body transition smoothly into spring. The seasonal food lists nearly double from winter to spring in the Northeast to include: arugula, asparagus, beet, broccoli, cabbage, carrot, cauliflower, cherries, fava beans, fiddleheads, garlic scapes, kale, lettuce, mushrooms, nettles, parsley, parsnip, peas, pea greens, radish, ramps, rhubarb, spinach, and strawberries .
Key Nutrients to Focus On for Allergies:
- Quercetin: A bioflavonoid with natural antihistamine properties, quercetin helps mitigate seasonal allergies by stabilizing mast cells and reducing histamine release. Found in apples, onions, and berries, this compound may be particularly beneficial during spring allergy season . However, individuals with genetic variations such as COMT SNPs should consult a healthcare provider before significantly increasing intake.
- Gamma-Linolenic Acid (GLA): Sourced from borage oil, evening primrose oil, and black currant seed oil, GLA has potent anti-inflammatory effects that may help alleviate atopic conditions, which often flare up in response to seasonal allergens .
The Light-Food Connection: Synchronizing Energy Systems
The body’s ability to process nutrients is closely linked to the light environment. Emerging research suggests that circadian rhythms influence digestion, metabolism, and hormonal balance . To optimize this interplay:
- Eating the full rainbow of colors in phytonutrients: Each color represents different phytochemicals and nutrients that provide unique health benefits, including improved vision, decreased inflammation, reduced risk of chronic diseases, and a strengthened immune system.
- Leverage Morning Sunlight for Metabolic Activation: Morning exposure to blue-rich sunlight enhances insulin sensitivity and mitochondrial function, making it an excellent time for nutrient-dense breakfasts .
- Reduce Artificial Light at Night: Excessive blue light exposure in the evening can suppress melatonin production, disrupting sleep and metabolic regulation. Using amber-tinted glasses or dimming indoor lighting after sunset can mitigate these effects .
Embracing Seasonal Shifts for Holistic Health
The transition from winter to spring is a time of renewal, both in nature and within our bodies. By integrating morning sunlight, prioritizing full-spectrum nutrition, and aligning daily routines with circadian rhythms, we can harness the season’s energy for optimal health.
Simple practices—like stepping outside for morning light, incorporating a full spectrum of phytonutrient-rich foods, and adjusting meal timing—can profoundly impact sleep, metabolism, and overall vitality. As the days grow longer, embracing these natural health hacks can make the shift into spring not just smoother but truly rejuvenating. Stay tuned as we dive in deeper to the quantum biology details with our Basic Health Series!
References
- Holick, M. F. (2007). Vitamin D deficiency. New England Journal of Medicine, 357(3), 266–281. https://doi.org/10.1056/NEJMra070553
- Cajochen, C., Münch, M., Kobialka, S., Kräuchi, K., Steiner, R., Oelhafen, P., … & Wirz-Justice, A. (2005). High sensitivity of human melatonin, alertness, thermoregulation, and heart rate to short wavelength light. Journal of Clinical Endocrinology & Metabolism, 90(3), 1311–1316. https://doi.org/10.1210/jc.2004-0957
- Hamblin, M. R. (2017). Mechanisms and applications of the anti-inflammatory effects of photobiomodulation. AIMS Biophysics, 4(3), 337–361. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5523874/
- Wright, K. P., McHill, A. W., Birks, B. R., Griffin, B. R., Rusterholz, T., & Chinoy, E. D. (2013). Entrainment of the human circadian clock to the natural light-dark cycle. Current Biology, 23(16), 1554–1558. https://doi.org/10.1016/j.cub.2013.06.039
- Fisk, W. J., & Rosenfeld, A. H. (2000). Health benefits and costs of low-energy lighting. Energy and Buildings, 34(5), 537–548.
- Lambert, G. W., Reid, C., Kaye, D. M., Jennings, G. L., & Esler, M. D. (2002). Effect of sunlight and season on serotonin turnover in the brain. The Lancet, 360(9348), 1840–1842. https://pubmed.ncbi.nlm.nih.gov/12480364/
- Seasonal Food Guide. Retrieved from https://www.seasonalfoodguide.org/
- Mlček, J., Juríková, T., Škrovánková, S., & Sochor, J. (2016). Quercetin and its anti-allergic immune response. Molecules, 21(5), 623. https://doi.org/10.3390/molecules21050623
- Das, U. N. (2006). Gamma-linolenic acid: An anti-inflammatory omega-6 fatty acid. Current Pharmaceutical Biotechnology, 7(6), 531–534. https://pubmed.ncbi.nlm.nih.gov/17168669/
- Longo, V. D., & Panda, S. (2016). Fasting, circadian rhythms, and time-restricted feeding in healthy lifespan. Cell Metabolism, 23(6), 1048–1059. https://doi.org/10.1016/j.cmet.2016.06.001
- Eat the rainbow for good health. https://newsnetwork.mayoclinic.org/discussion/eat-the-rainbow-for-good-health/
- Mason, I. C., Qian, J., Adler, G. K., & Scheer, F. A. J. L. (2020). Impact of circadian disruption on glucose metabolism: Implications for type 2 diabetes. Diabetologia, 63(3), 462–472. https://pubmed.ncbi.nlm.nih.gov/31915891/
- Shechter, A., Kim, E. W., St-Onge, M. P., & Westwood, A. J. (2018). Blocking nocturnal blue light for insomnia: A randomized controlled trial. Journal of Psychiatric Research, 96, 196–202. https://www.sciencedirect.com/science/article/abs/pii/S0022395617308592