There is a possible link between the use of anabolic steroids and antisocial attitude, as per researchers from Sweden.

Anabolic steroids are synthetic drugs concerned with male sex hormones that are used by celebrities and others for adding muscles, promoting body strength, enhancing endurance level, and staying young.

From News-Medical.Net:

Dr. Fia Klötz of Uppsala University in Sweden, and colleagues studied the associations between criminality and steroid use in 1,440 Swedish residents tested for the drugs between 1995 and 2001.

They found that those who tested positive for steroid use were about twice as likely to have been convicted of a weapons offence and one and a half times as likely to have been convicted of fraud.

It appears that the use of anabolic steroids is associated with a lifestyle involving crime, including weapons offences and fraud, but did not appear to be associated with violent crimes or crimes against property.

The authors say aggressiveness appears to occasionally trigger violent behaviour, sometimes even including homicide and steroid use is linked to extreme mood swings, impulsiveness, depression, paranoid jealousy, extreme irritability, delusions and impaired judgment.

The researchers revealed that steroid abuse or non-prescription use of steroids can result in antisocial and unhealthy behavior such as signs of maniac or hypomania episodes, development of suicidal tendencies, increased level of aggression, and psychotic episodes.