Full fat soybeans refer to the whole soybean for food/feed, without the oil removed. (The oil is usually removed). It is lower in protein and higher in fats. Soy protein is much harder to digest than meat, and is considered a cheap, poor quality protein filler. Soy is highly allergenic, causing problems for many animals and contains some enzyme inhibitors which impeded protein digestion. Most soy is also genetically modified (see GM), which makes its long term effects impossible to predict.