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

Anabolic steroids are synthetic drugs that are related to the male sex hormones and can be administered in oral and injectable forms. They are used by males and females, bodybuilders to sportsmen, and fitness freaks to normal people, without a prescription to build solid muscle mass and enhance body strength in order to look better.

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 behavior, sometimes even including homicide and steroid use is linked to extreme mood swings, impulsiveness, depression, paranoid jealousy, extreme irritability, delusions and impaired judgment.

It is worth nothing here that steroids are usually associated with violent anger outbursts and impulsive attitude, but this study suggested that steroids may also be behind crimes that involve preparation and advance planning.