This page discusses studies from the late 1970s linking high-voltage power lines to childhood leukemia, especially acute lymphoblastic leukemia (ALL). A substantial 1997 National Cancer Institute stud...This page discusses studies from the late 1970s linking high-voltage power lines to childhood leukemia, especially acute lymphoblastic leukemia (ALL). A substantial 1997 National Cancer Institute study found no solid evidence for this association and concluded that only one of five epidemiological standards was met.