"The old ‘free radical theory of aging’ is now thought to be wrong. Instead, it is thought that free radicals are vital signals within our cells to stimulate the body’s own repair and regeneration mechanisms. For example, in one experiment, high doses of antioxidants (in the form of vitamin C) were given to people doing exercise training. Those who were taking the antioxidants failed to get fitter as a result of the training, thought to be because the antioxidants neutralised the free radicals that were signalling that the body respond to the exercise."
I'm a polymer scientist. In my job adding free radicals to stuff causes it to decompose quick smart. Thats how flame retardents work. Bit of heat from flame, free radicals formed, plastic turns to mush, flame dies.
"The old ‘free radical theory of aging’ is now thought to be wrong. Instead, it is thought that free radicals are vital signals within our cells to stimulate the body’s own repair and regeneration mechanisms. For example, in one experiment, high doses of antioxidants (in the form of vitamin C) were given to people doing exercise training. Those who were taking the antioxidants failed to get fitter as a result of the training, thought to be because the antioxidants neutralised the free radicals that were signalling that the body respond to the exercise."