There are meat eaters, vegetarians, and vegans. Vegetarians drink milk and eat dairy products. Vegans eat no animal products. Meat eaters and vegetarians are the Yang. By eating animal flesh or drinking their body fluids, one ingests their hormones.
Vegetarians often drink more milk and eat more dairy than meat eaters.
Vegans eat no animal hormones. Vegans are the Yin. Significant atherosclerosis is rare in peoples whose diet over the life span is predominantly vegetarian and low in calories, total lipids, saturated lipids and cholesterol. Nutrition and Athersclerosis by Louis Katz. The study measured testosterone levels in 696 Oxford University men.