free radical

In addition, the free radicals produced can break down dead skin cells.

They also block the formation of free radicals in the system.

Now the presence of free radicals means we're getting old.

They protect the body from damage by substances called free radicals.

In 1986, he led a major conference on the medical aspects of free radicals.

Bad genes, sun damage, and free radicals aren't the only things that do a number to your face.

They protect your body from damage caused by free radicals.

So why doesn't the body protect itself better from free radicals and live longer?

Other free radicals produced within the body are now understood to be more important.

"We think the free radicals are doing the same thing in the brain."