" Animal fats (largely saturated) raise LDL cholesterol (29) and increase risk; these obviously come from foods eaten less or not at all by vegetarians. Total or LDL cholesterol is typically lower in vegetarians (30, 31). HDL cholesterol is not consistently different (30, 32), although it does tend to be a little lower in Adventists (33), perhaps because of the lack of alcohol consumption. Vegetarians are consistently thinner, or at least less overweight, than are nonvegetarians within the same studies (34, 32). It is also probable that vegetarians have lower blood pressures than others (32, 35, 36), although the reasons are still controversial, and effects are sometimes small as in British vegetarians (37). "

― Gary E. Fraser