Friday, April 6, 2007

All those L-O-N-G miles in the sun


We are all concerned with premature aging and skin cancer. The anti-aging industry is skyrocketing and the dermatologists have more work than they can keep up with. Every time I go to my dermatologist, I am told to stay out of the sun, especially between the hours of 10:00 and 3:00. Yah, right!

Ultraviolet (UV) radiation is invisible light waves that are shorter and more energetic than visible light. UV radiation is subdivided into categories based on wavelength. UV-B (320-290nm) and UV-A (400-320nm) are the two of greatest concern. UV-B causes sunburn, helps with Vitamin D synthesis, and is responsible for skin damage causing photoaging and cancer. UV-A is approximately 20 times more abundant, is not filtered by window glass. UV-A is unaffected by atmospheric conditions and is 100 times more likely to cause havoc to the skin. UV exposure is the primary cause for basal cell and squamous cell carcinoma! Sun exposure also increases the risk of developing melanoma. UV radiation directly damages cellular DNA and suppresses the skin’s immune system.

Besides wearing cover-up protection, sunscreens are needed for skin protection. Pick a chemical absorber or a physical blocker. Make sure that it is protective against the UV-B and the UV-A wavelengths. Apply generous amounts to all exposed skin and reapply every few hours.

I will be at the finish line of American River 50. I may see you there! Run safe, run wild, stay upright and mobile.

Linda Lee

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