Health Highlights: Aug. 31, 2004 Here are some of the latest health and medical news developments, compiled by editors of HealthDay:    -----       ACE Inhibitors Protect Artery Lining      Blood pressure drugs called ACE inhibitors not only lower blood pressure but also improve the health of artery walls, says an Italian study that reveals exactly how the drugs help protect people against heart attacks.      It's long been suspected that there had to be something else besides the ability of ACE (angiotensin converting enzyme) inhibitors to lower blood pressure to explain their benefit to patients...