There is also a theory that free radical buildup explains the aging process, known as the “free radical theory of aging.” Proponents argue that as the body ages, it accumulates free radicals.

but radical ideas require strong evidence, which Turin did not provide. Nor did he provide a detailed explanation of how these molecular vibrations could lead to neural activation. Turin's theory ...

Physicists have proposed a radical approach that questions decades of belief about how gravity, spacetime, and quantum mechanics fit together.