Do steroids cause permanent infertility in male users?

Maria Shriver didn’t become pregnant during the first three years of her marriage to the well-known American bodybuilder Arnold Schwarzenegger. Her mother was in trouble. Since the bodybuilder applied steroids, she feared that these drugs could cause infertility in him. That’s why Arnold Schwarzenegger’s mother-in-law presented a scientific report about steroids to her daughter. The report enumerated possible adverse results of steroids, including infertility.
Arnold Schwarzenegger affirmed that he saw this report on the desk of his wife causally. Thus, he studied it. The bodybuilder laughed a lot. He affirmed that his mother-in-law was out of control.
But the bodybuilder’s mother-in-law troubled without any reason. Her daughter and Arnold Schwarzenegger became parents of four kids. Moreover, Arnold Schwarzenegger got a child as a result of his extra-marital relations. Thus, it was evident that steroids didn’t have any negative impact on reproductive system of this person.
Do steroids cause infertility in male consumers? These preparations suppress natural secretion of the hormone testosterone. That’s why men who use these preparations may have infertility. But it is important to understand that this unwanted result is not irreversible. When males stop taking steroids, their natural production of testosterone is restored. Thus, this negative result disappears.  
The autobiography published by Arnold Schwarzenegger describes certain interesting aspects connected with steroids. This bodybuilder applied steroids during his competitive career. Anabolic steroids promoted winning. Application of these medicines was not forbidden in professional bodybuilding, when Arnold Schwarzenegger competed.