Vegetarian diet helps to balance hormones. Hormones control most of the body's major functions, including hunger, reproduction, emotion, and mood. Hormones such as estrogen may also be responsible for causing breast cancer if the concentration is too high. Tallow is believed to increase estrogen levels, while those who choose diets from plants have more sex hormone binding globulin (SHBG). This suggests that vegetarian diets can control hormone levels, ensuring that they are not too high.