सूर्य का प्रकाश सेहत के लिए उपयोगी Health Benifit of Sunlight

Author : Dr. P. D. GUPTA

Former Director Grade Scientist, Centre for Cellular and Molecular Biology, Hyderabad, India


Ninety-eight percent of Sunlight enters the human body through the eyes and the other 2% by way of skin. Every 2 hours approximately 99% of the body's new blood volume is exposed to light as it circulates through the blood vessels on the back of the eye, continually altering blood chemistry. Production of melatonin (Dark reaction) in the pineal gland is controlled by light. Until that, our biological clock was regulated by the sunlight i.e. 12h light and 12h dark. But now lights are available 24h therefore our clock is disturbed. This thoughtlessness and the freedom of light grant us many diseases.

Blood chemistry changes by laboratory light

It was a surprising observation that laboratory light.was good enough to bring changes in blood chemistry in vitro. (Yilmaz, Sedat. "Effect of changes in laboratory light intensity on biochemistry and haemogram analysis" Turkish Journal of Biochemistry, vol. 45, no. 3, 2020, pp. 249-253).   The changes in laboratory light intensity on chemistry and whole blood analysis show that the platelet count is sensitive to changes in laboratory light intensity at clinically unacceptable levels. The lipase, alkaline phosphatase, creatinine, and iron tests are also sensitive to changes in laboratory light intensity, but at clinically acceptable levels.

Light keeps us disease-free

The sunlight stimulates the immune system which in turn offers resistance to diseases. This sunlight is the primary source of natural vitamin D, while very little comes from food.

We can have Vitamin D for free from the sun's rays which in turn boosts immunity, according to the largest and most nationally representative study so far on the subject. “The major source of vitamin D is sunlight “Vitamin D also has immunomodulatory effects that can improve the body's immune system,”

This immune system is the body's defense against viruses and bacteria that cause disease. The sunlight makes T cells which kill bacteria, move faster — marking the first reported human cell responding to sunlight by speeding its pace.  A new study has found that chronic disruption of one of the most basic circadian (daily) rhythms resulted in an increased incidence of hormone-dependent cancers in humans. (The author has his own study and views)