: Chris Driver wrote:
: >The free radical theory has been around for nearly five decades now. Time
: >enough for workers to tie it down and develop commercial anti-oxidants
: >which will substantially extend human lifespan. This has not happened.
Free radicals may become so through exposure to solar or
anthropogenic sources of ultraviolet radiation.
The damage "caused" by free radicals is actually caused by
exposure of the skin to wavelengths of light which add energy to
molecules which selectively are affected, owing to their electron shell
Free radicals are a sink for the energy. They will form, they
will amass energy hostile to the organism, but it is the sun that
"causes" the ageing.