Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Medical scientists warn that gym supplements which consist of extra protein have proved to be extremely harmful for human health. Meanwhile, the British Dietetic Association have brought up evidence which demonstrate that high levels of additional protein within the human body can lead to kidney damage, liver damage and frequent nausea. Some consumers have revealed that they have experienced the negative reactions like shaking, shivering, cramps after 11 years. The individuals who perform bodybuilding advance that they need the gym supplements, in order to allow their muscles to grow in size, shape and strength. Hence, the Department of Health has recommended the bodybuilders to avoid consuming more than twice the prescribed daily intake of protein!