"urine therapy" crappy joke or cruel hoax?

Do you remember Michael Landon? Little Joe on Bonanza, and the dad on Little house on the Prairie? He died of cancer while chugging his own wiz in some quack clinic in Mexico. This whole drink your own urine and be cured of every thing/anything is a at best a joke! And at worse, like for Little Joe, a cruel hoax perpetrated on the desperate.