“Taking out electrons irreversibly means killing,” wrote Szent-Györgyi. This breakdown of electron excitability is what causes metal to rust and leaves to turn brown and die. Humans “rust” as well. As the cells in our bodies lose the ability to attract oxygen, Szent-Györgyi wrote, electrons within them will slow and stop freely interchanging with other cells, resulting in unregulated and abnormal growth. Tissues will begin “rusting” in much the same way as other materials. But we don’t call this “tissue rust.” We call it cancer.
