I shortened my last blog so I could wrap up with the UVA/UVB info that is so often mis-understood. It is important to understand the following things:
The Long (UVA) and Short (UVB) of It
While UVA rays are longer and less intense than UVB, we are exposed to more throughout our lifetimes because they are equally present during all daylight hours throughout the year.
UVA can also penetrate clouds and, unlike UVB, can go through glass. This is why it’s important to consider sun protection even when you’re not at the beach or pool.
It has been thought that while both play a major part in skin aging, UVB has been the main contributor to skin cancer. UVB is the chief cause of skin reddening and sunburn, affecting mostly the superficial layers of skin.
But even though UVB has a more concentrated negative effect, UVA causes cumulative damage over years and years, which may also initiate the development of skin cancer. Most skin cancers occur in the basal layer of the epidermis and studies have shown UVA damages cells in this layer, as well.
Bottom line is that while the sun provides wonderful health benefits, we still need to take precautions to only receive its benefits and not its damaging effects. In my next blog, I’ll continue the subject and talk about how to protect yourself, including helpful clothing, sunscreen and diet tips.
If you’d like more information on rejuvenating your skin, visit www.davinciplastic.com.
Steven Davison M.D.
Board Certified Plastic/Reconstructive Surgeon