There are some concerns regarding the formation of cancers (in lab animals) caused by certain SARMS. Even with all the proven benefits of taking SARMS instead of AAS, these compounds are relatively untested and long term affects are TOTALLY unknown. By taking SARMS, you are basically partaking in one of the largest most disorganized, uncontrolled and potentially haphazard unofficial clinical trials of a drug ever seen in the history of medicine. Athletes, bodybuilders and strength competitors all over the World, both professional and non-professional are desperate for that elusive ‘safe’ steroid to be invented. Suddenly SARMS come along and everyone yells “Hallelujah! It’s here!” and are all too eager to brand it the best thing since sliced bread. The truth is, no one knows yet.