A significant amount of lead exposure can cause swelling of the brain, headaches, lethargy, anemia, dizziness, muscular paralysis, sleeplessness, loss of appetite, and abdominal pain. It can affect vision and hearing, and in extreme cases, it can cause kidney failure, coma, and death. Even at lower, single-digit levels, the damage is irreversible. For an infant like Nakala or a two-year-old like Reeva, enough exposure can mean developmental delays, cognitive impairment—literally, a drop in IQ—as well as memory issues, attention and
