hi lisa,
most of these studies pit a "low-fat/high carb" diet against the "low-carb/high fat"diet". they consistently equate a vegetarian diet as one with low fat and high carbs. all a vegetarian diet is one without animal flesh. they do not compare them with the best diet of all (AMPLE PROTEIN, AMPLE ESSENTIAL FAT, REMAINDER NATURAL CARBS).

i think you are seeing only what you want to see, and ignoring that fats cause artery clogging. the stickier the fat, the more apt to clog. the 2 essential fats are not sticky - just the opposite, while the trans-polyunsaturates are almost as sticky as the saturated fats, because of their chemical make-up.