Sun and Sea: A Cosmic Dialogue with the Human Body

The Universe Breathes Through Every Human Cell

I believe we are not alone. We are but a green leaf in the forest of the cosmos, a speck of dust blessed with feeling in the vast expanse of sky and earth.
The human body—made of over 60% water, with blood that pulses like the tides and a heartbeat echoing like drums deep within the earth—is a living testament to one truth: we are born of nature, and only through nature can we truly heal.

In a digital age where humans drift ever farther from the sun, the sea, and their primal biological rhythms, therapies like sunbathing and seawater bathing are being rediscovered as ancient gifts from Mother Nature.
Across cultures, dawn sunlight and the ocean have long been considered sacred—dwelling places of divine presence.
Today, modern science is slowly confirming what ancient intuition always knew: nature heals—if we are willing to listen.

Moritz and Pelz: Two Views on the Healing Power of Sunlight

In Heal Yourself with Sunlight, Andreas Moritz boldly calls sunlight “the most complete and free medicine ever known to humankind.”
To him, sunlight is not just a source of vitamin D, but a cascade of intricate biological signals that regulate the immune system, blood pressure, heart function, and even our emotions.

Though some may find his views extreme—especially his criticism of sunscreen and “sun-fearing” lifestyles—Moritz sparked a powerful conversation about the essential role of natural light in modern health.
In a world increasingly deprived of sunlight—both physically and spiritually—his words shine a necessary light.

On a more moderate path, Mindy Pelz, in The Menopause Reset, embraces a balanced approach. Backed by epidemiological research, she affirms that morning sunlight is not only our most accurate biological clock, but also a natural hormonal therapy for women navigating menopause.

A long-term Swedish study (Lindqvist et al., 2016) even showed that complete sun avoidance was associated with increased mortality—a paradox that challenges modern assumptions.

Sunlight and Seawater – The Natural Light Therapy

If life on Earth began with light, then it is no exaggeration to say that sunlight is the very origin of natural healing. Humanity has long sensed this through intuition—but today, modern science is steadily confirming that ancient wisdom with data and clinical evidence.

In Heal Yourself with Sunlight, Andreas Moritz calls sunlight the “ultimate universal medicine,” a bioenergetic force that helps regulate blood pressure, strengthen the immune system, prevent chronic illness, and even support mental and neurological health.
Controversial as some of his claims may be, his view introduces a deeply holistic perspective: sunlight is not just energy—it is a biological message whispered into every cell.

However, modern medicine does not fully endorse all of Moritz's conclusions. For instance, he argues that sunlight can reverse cancer—a claim not supported by controlled clinical trials. According to the U.S. National Cancer Institute (NCI, 2024), vitamin D supplementation does not reduce the incidence or mortality of cancer.

By contrast, Mindy Pelz, in The Menopause Reset, does not romanticize sunlight. She approaches it as part of a modern functional medicine protocol. Rather than relying solely on intuition, she references large-scale longitudinal studies with strong scientific value—most notably, the Swedish MISS study (Lindqvist et al., 2016).
According to the findings, women who completely avoided sunlight had significantly higher mortality rates than those who practiced moderate sun exposure.

Beyond vitamin D, UVB light also stimulates the skin’s production of nitric oxide, a molecule that plays a key role in vasodilation and lowering blood pressure (Gendelman et al., 2022). Moreover, numerous neurological studies show that natural light regulates circadian rhythms, improves sleep–wake cycles, and promotes the production of serotonin and melatonin—two key hormones that affect mood and sleep quality (Pelz, 2020).

Thus, from a scientific standpoint, sunlight can be a powerful natural biological safeguard, as long as it is approached with respect, knowledge, and balance. It is not a miracle cure—but a gentle return to the primal laws that once shaped us.

 How to Sunbathe and Seabathe Scientifically and Naturally

Those who have stood by the sea on a March morning—when the sun is still soft and the waves whisper ashore—must have felt it: with just light, water, and air, the human spirit comes alive. But to turn sensation into real healing, science has shown us a path—how to receive light and water the right way.

According to the American Academy of Dermatology (2024), the ideal time for sunbathing is before 9 a.m. and after 4 p.m.—when UVB levels are still sufficient for vitamin D synthesis, yet not intense enough to damage the skin.
Just 10–30 minutes per session, 2–4 times a week, is often enough to maintain serum vitamin D levels above 30 ng/mL, boosting immunity and metabolism (NIH, 2024).

However, sunbathing is not about burning the skin. The optimal moment is when the skin turns gently pink, not painfully red. That’s when the body has received its “letter from the sun.”
Overexposure leads to DNA damage and premature aging—working against the very goal of healing.

A diet rich in antioxidants—like beta-carotene (from gac fruit, carrots), lycopene (from ripe tomatoes), and vitamins C and E—can help protect cells from free radicals generated during sun exposure (Young & Narayanan, 2022).
Thus, true healing is not just “going into the sun,” but a synergy of light, nutrition, breath, movement, and mindfulness.

 Seawater – A Natural Mineral Serum

Seawater is like nature’s mineral serum. Its high magnesium content calms the nervous system, improves sleep, and lifts the mood.
A study published in the British Journal of Dermatology (2019) showed that bathing in mineral-rich seawater significantly reduces symptoms of eczema—a vivid example of seawater’s natural anti-inflammatory power.

Gentle swimming in saltwater also stimulates blood circulation, promotes detoxification through the skin, and relaxes the muscles—similar to the effects of balneotherapy in traditional European medicine.

Don’t forget: early morning light also resets the serotonin–melatonin axis, stabilizing mood, improving sleep, and supporting hormone regulation—especially beneficial for women in perimenopause (Pelz, 2020).
Light also boosts dopamine and beta-endorphins—the “happy hormones” that help us feel more alive, connected, and… aligned.

Healing by Returning

In today’s world—where we live in concrete boxes, work under fluorescent lights, and connect through electromagnetic waves—returning to sunlight and the sea is not merely a choice; it is a return.

Because in the end, we are of this Earth. Our cells remember light like an ancient instinct.
Our spirit softens to the sound of waves.
Our heartbeat slows in saltwater.
And that is when we heal—no pills, no prescriptions—just sun, sea, and an open heart.

From the inspired voice of Andreas Moritz in alternative medicine to the evidence-based wisdom of Mindy Pelz, we can find balance:
Between ancient intuition and modern science.
Between faith and data.
Between nature and human knowledge.

When we learn to respect the laws of nature and understand our own biology, we also learn how to receive sunlight—the oldest energy of the universe—in a way that is safe, sacred, and whole.

 Sun & Sea—If Done Right—Are Not Just Leisure, but Silent Rituals of Healing.

Within every drop of water, every ray of light, lies a profound message:

The universe has never turned its back on us—we have simply forgotten how to listen.

Tuệ Minh