Why Daily Dose of Sunlight is Important for Our Immune System

T cells or Thymus cells are a particular type of White blood cells. They are informally called as “killer cells”. It is because the primary function of T cells is to kill seek and destroy foreign bodies. Like every other cell, even T cells have a component called receptor in in them. Receptors help the cells to communicate with each other. The receptors of T cells require supply of the Vitamin D available in the body to get activated. Vitamin D is available to our body through sun light. A daily dose of 25 to 50 micrograms of sun light is recommended by doctors. But the present day sedentary life style, does not provide our body with enough Vitamin D. Nearly half of the world’s population now has lower than optimal levels of vitamin D. This article tries to gain further insight on the role of Vitamin D in ensuring normal functioning of the Immune system.

Knowledge Gained by Research on this Subject:

  • The role of Vitamin D in activating the Immune system against infections is a new finding as previously it was only known that Vitamin D is important for calcium absorption.
  • According to a research study carried out at the Copenhagen University’s department of international health, immunology and microbiology, if the levels of Vitamin D are low in our blood, the T-cells remain unaware of the presence of bacterias and do not even mobilize for action.
  • This may allow the disease causing bacteria to strengthen their presence and release the harmful toxins causing infection in the body.
  • These new findings will be providing the lead to discover new vaccines against infections in our body.
  • Vitamin D also has a vital role to play in dealing with anti-immune reactions of the body and the complication which arise with organ transplantation.
  • The T cells are hypersensitive and multiply at a very fast rate when they fight against infections.
  • At times, this hypersensitivity proves counter-productive and the T cells mistakenly consider our own body cells as threats and start killing them. Such anti-immune actions of T cells give rise to autoimmune diseases like Diabetes with no cure till date.
  • Moreover when an organ from another person’s body is transplanted in a body, these T cells cannot recognize the cells of the transplanted organ properly and consider them as threats. This causes a risk of complications to develop in our body after organ transplantation.
  • Doctors in such situations give medicines to the patients which suppress the T cells in our body from functioning normally for a while.
  • Presence of sufficient amount of Vitamin D in the body can prevent such malfunctioning of T cells.

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