Livercancer from test is from the 60s where they used methtest orally in some occasions that led to liver problemes.
There are no studies of today that show such a connection.
Infact, the only drug which has proven to direct cause cancer in humans that i know of, is Anadrol.
Cardarine as a hdlincreaser was new to me.
As long as u watch BP, hct and prostate, 500 mg could be fine.
But it will weaken your receptors and to have a blast be effective, u would have to go dangerously high.