The Interplay of Sunlight, Grounding, Meditation, B12, and Corn Silk in Mental Health
- Oct 1, 2025
- 3 min read
Dr. Udim Isang, DPT, EdD, Mbia Idiong, is an award-winning educator, physical therapist, and activist specializing in indigenous healing practices, implicit bias in healthcare, and integrative wellness through movement and mindfulness.
Modern science is catching up with what many Indigenous and ancestral traditions have always known. The sun, the earth, and the nutrients within our food play critical roles in sustaining both physical and mental health.
Sunlight and vitamin D
Sunlight exposure stimulates the production of vitamin D in the skin. This vitamin is essential for calcium absorption and bone health, but it also plays a profound role in mood regulation. Just 10 to 20 minutes of safe sun exposure a few times a week is therapeutic and can make a meaningful difference, though supplementation may be necessary in regions with limited sun. Sunlight exposure triggers vitamin D production in the skin. Vitamin D is essential for calcium absorption, bone integrity, and immune regulation. Importantly, low levels of vitamin D are associated with depression, seasonal affective disorder, and fatigue.[1]
Grounding and nervous system regulation
Grounding, walking barefoot on a natural surface, allows the body to absorb free electrons from the earth. This interaction reduces inflammation, regulates cortisol, and improves sleep quality.[2] Stress resilience and emotional regulation improve when grounding is practiced consistently.
Meditation as a synergistic practice
Meditation alone has been shown to reduce anxiety, stress, and depression.[3] When combined with sunlight and grounding, meditation amplifies the benefits, creating a multidimensional practice for nervous system balance and emotional stability.
Vitamin B12 and cognitive vitality
Vitamin B12 supports neurological function and energy production at the cellular level. Deficiencies can lead to depression, memory loss, and neuropathy.[4]
Restoring B12 through food or supplementation often enhances mood, mental clarity, and overall vitality.
Corn silk: Ancestral medicine reconsidered
Corn silk (Zea mays L.), often discarded, is rich in bioactive compounds. Traditionally used to treat urinary issues, recent studies suggest corn silk polysaccharides also possess antioxidant and neuroprotective properties, potentially supporting stress reduction and mental well-being.[5] This highlights how ancestral knowledge intersects with emerging research in integrative care.
Conclusion
Wellness is not confined to one practice or supplement. In fact, to be whole and heal holistically, we need a variety of practices. Incorporating sunlight, grounding, meditation, balanced nutrition, and regular movement practice can create a holistic foundation for mental health. When combined, they offer a sustainable foundation for physical and mental health. Embracing both ancestral wisdom and modern science creates space for resilience, vitality, and balance.
Read more from Dr. Udim Isang
Dr. Udim Isang, The (Em)Body Doctor & Nigerian Healer
Dr. Udim Isang, DPT, EdD, Mbia Idiong, is a Doctor of Physical Therapy and Executive Leadership Educator passionate about indigenous healing, mindfulness, and movement therapy. As a queer, trans, immigrant, and neuro-distinct individual, they/they/it/we advocate for bridging healthcare equity and inclusive wellness practices. Learn more about their transformative work integrating mind, body, and spirit at the intersections of identity and healing.
References:
[1] Holick, M. F. (2007). Vitamin D deficiency. New England Journal of Medicine, 357(3), 266–281.
[2] Chevalier, G., Sinatra, S. T., Oschman, J. L., C Delany, R. M. (2012). Earthing: Health implications of reconnecting the human body to the Earth’s surface electrons. Journal of Environmental and Public Health, 2012, 291541.
[3] Goyal, M., Singh, S., Sibinga, E. M., et al. (2014). Meditation programs for psychological stress and well-being: A systematic review and meta-analysis. JAMA Internal Medicine, 174(3), 357–368.
[4] Stabler, S. P. (2013). Vitamin B12 deficiency. New England Journal of Medicine, 3c8(2), 149–160.
[5] Yang, B., Xiao, B., Sun, T., et al. (2019). Corn silk (Zea mays L.) polysaccharides: A review of their structures, bioactivities, and potential applications. International Journal of Biological Macromolecules, 130, 453–461.
