Sun exposure has a protective effect against the development Non-Hodgkin’s lymphoma (NHL), a blood cancer, Australian researchers report.

Dr. Anne Kricker, of the University of Sydney, and colleagues investigated the possibility that high sun exposure is associated with an increased risk of NHL – but they found the opposite — according the results of a study published in the International Journal of Cancer.

The study involved adults between the ages of 20 and 74 years. In total, 704 cases of NHL and 694 randomly selected matched controls were enrolled.

The risk of NHL decreased with increasing hours of sun exposure. With the highest exposure, the odds of having NHL decreased by 35 percent compared with the lowest exposure level.

One effect of sunlight is to stimulate the body’s production of vitamin D. The researchers say that “increasing evidence that vitamin D may protect against cancer makes ultraviolet-mediated synthesis of vitamin D a plausible mechanism whereby sun exposure might protect against NHL.”
-International Journal of Cancer

Dr. Keith and Laurie Nemec comments on Getting the Right Balance of Sun Exposure:

Light is critical for health and healing.  Your immune system is intimately connected to the Light-Dark cycle.  This means when the sun is up, you need to be in it a minimum of 30 minutes a day.  When the sun is down, you need to sleep in total darkness with 8- 9.5 hours of deep, dark sleep.  This 8-9.5 needs to be divided into 3.5 or more  hours before midnight.  These two factors combined can triple your Balance Light and Dark for Healthimmune system defense to fight off bacteria, viruses, parasites, candida and cancer cell proliferation.
Lack of sunlight can also produce mental, emotional imbalances leading to more depression, anxiety and more emotional food cravings.  For those who cannot get outside everyday of the year, some options are:

  1. Get 15 minutes of exposure through a (portable full-spectrum light therapy).
  2. Get one hour of sun exposure per day in direct sun.