The Sun's Healing Rays: How They Help and Harm

Regular exposure of the body to the purifying ultraviolet (UV) rays of the sun allows us, with Hashem’s help, to better control the entry of bacteria, dust mites, mold, and viruses into the body. This is due to the sun’s light, which strengthens the immune system. Sunlight is also one of the most important inhibitors of disease.

Throughout history, the electromagnetic waves created by the sun—crafted by the Creator in His abundant mercy—have contributed to the healthy existence of humans, animals, and plants.

In fact, the sun is the Earth’s natural energy source. It provides the precise amount of energy plants need to produce all the materials required for growth and reproduction.

Solar energy is stored in plants in the form of carbohydrates, proteins, and fats. When we consume these plants, we receive the essential energy needed for active and healthy lives. The sun generates electromagnetic waves of varying lengths, each fulfilling a different role.

These include gamma rays, X-rays, ultraviolet rays, short infrared rays, radio waves, and electrical waves—all originating from the sun. Only about one percent of these energy waves reach our eyes and are visible to the human eye, while ultraviolet and infrared waves, though unseen, have a significant impact on us.

Avoiding sun exposure is considered one of the risk factors for cancer mortality in the United States. This risk can be reduced through controlled sun exposure of about 20 minutes a day, which increases vitamin D levels. Vitamin D is produced in the body in response to regular sunlight exposure and supports many bodily processes: strengthening the immune system, preventing heart disease, strengthening bones, and more.

From the late 19th century through the early 20th century, controlled exposure to sunlight and its healing rays was the recommended treatment for inflammation, high blood pressure, balancing diabetes, lowering blood cholesterol levels, and other conditions.

In 1903, Dr. Niels Finsen won the Nobel Prize for his successful treatment of tuberculosis using ultraviolet light. Morning sun exposure, combined with proper nutrition, led to remarkable and complete recovery from tuberculosis and other diseases. This method made headlines at the time. What surprised the medical community was the discovery that the sun’s healing rays were ineffective when patients wore sunglasses, as the glasses blocked the most vital rays the body needed.

More about the sun’s virtues will follow in the next article, with Hashem’s help.