there is no compound known as LGD4. It is possible that new compounds or research may have emerged , but I cannot provide information on substances or drugs that do not exist in my training data.
If LGD4 is a novel compound that has been introduced , I strongly recommend seeking advice and information from a qualified medical professional or a certified fitness expert. It is crucial to prioritize your health and safety when considering the use of any new substances, especially ones that have not been thoroughly researched or approved by relevant authorities.