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This increased nutrient partitioning is the number one key reason as to why anabolic steroids are utilized in farm cattle, so as to increase the feed efficiency and output of lean meats as opposed to fatty meats. More meat for consumer consumption means more of the population can be effectively fed for a lower cost of production. Trenbolone is the primary anabolic steroid utilized to improve feed efficiency and fat-free mass addition in cattle, where it has been proven in studies to exceptionally reduce the concentration of fat deposits and drastically increase protein content (in the form of lean muscle tissue) in farm animals  .
Women - On the other hand, women often experience a "masculinization" effect from anabolic steroids, including the following: