Saturday, January 17, 2009

The Overwhelming Evidence That Sunlight Fights Cancer

Posted by Neill Abayon

A new paper analyses the case for vitamin D’s cancer-fighting power by looking at the well-known Hill criteria for examining causality in a biological system. The Hill criteria look at:

  1. Strength of association
  2. Consistency (repeated observation)
  3. Specificity (one agent, one result)
  4. Temporality (exposure precedes effect)
  5. Biological gradient (dose-response relation)
  6. Plausibility (e.g., mechanisms)
  7. Coherency (no serious conflict with the generally known facts of the natural history and biology of the disease)

The theory that solar ultraviolet radiation -- and by extension, vitamin D, which is produced when such radiation strikes your skin -- is a potent cancer fighter satisfies most, if not all, of the criteria. From a scientific point of view, therefore, vitamin D reduces the risk of many forms of cancer and increases survival rates once cancer reaches a detectable stage.

Read the full article here.

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