The article doesn’t say taxi drivers are immune to Alzheimer’s. It specifically talks about having more cognitive reserve, which means having “more brain” to at

The article doesn’t say taxi drivers are immune to Alzheimer’s. It specifically talks about having more cognitive reserve, which means having “more brain” to atrophy. Essentially Alzheimer’s makes their hyper-developed hippocampus become that of an average’s person because they started off higher up. Being intelligent doesn’t mean you still learn new things as you age. Using your brain doesn’t do anything, it’s using your brain in novel ways. That companion is also bunk. Two entirely different diseases.