YK11 is a new synthetic steroid based on 5-α-dihydrotestos-terone (DHT), a hormone naturally found in the human body. DHT is a stronger form of testos-terone that targets androgen receptors in the prostate, sex organs, hair, and liver.

YK11 is gaining interest from bodybuilders, who believe it can help them quickly build muscle with minimal side effects-a belief which is not founded in the available science. The YK molecule has more in common with steroids than SA/RMs, although it's often mistakenly labeled as a non-steroidal SA/RM .

YK11 has only been studied in cells so far. There's no clinical information on side effects. Not even animal studies have been carried out yet.

In a cell study, YK11 increased the levels of foll/istatin. High foll/istatin may increase the risk of esophagus, stomach, skin, and prostate cancer. On the other hand, a human study suggests that high folli/statin may be beneficial for breast cancer.

The chemical structure of YK11 is very similar to other steroids that are toxic to the liver. YK11 may have toxic effects on the liver as well .

Theoretically, it may also affect the prostate, hair growth, vocal cords, and other organs.