Given a choice, would you rather be beautiful but brain-damaged, or average-looking but living with full mental capacity? Not surprising, scientists are finding out that Botox, that oh-too-popular wrinkle treatment, can potentially travel into the brain, at least in lab animals:
One of the deadliest poisons in nature and a possible bioterrorism agent, this neurotoxin reached the market, in very dilute doses, starting in 1989 as Botox. A big reason Botox and its cousins, such as Myobloc, were OK'd was that preclinical testing showed that after being injected, they did not travel along the body's highways—nerve cells—to the brain and spinal cord. Yes, there was some evidence the toxin slipped into the bloodstream or the lymph system, but Botox in the bloodstream cannot enter the brain, says its manufacturer.