Scientists have attempted to test the association between anabolic steroids and aggression by administering high steroid doses or placebo for days or weeks to human volunteers and then asking the people to report on their behavioral symptoms. To date, four such studies have been conducted. In three, high steroid doses did produce greater feelings of irritability and aggression than did placebo, although the effects appear to be highly variable across individuals. In one study, the drugs did not have that effect. One possible explanation, according to the researchers, is that some but not all anabolic steroids increase irritability and aggression. Recent animal studies show an increase in aggression after steroid administration.
Tetrahydrogestrinone (THG) - Commonly known as The Clear, Tetrahydrogestrinone (THG is a type of steroid that had only been recently placed into scheduling as of 2005 and is noted unapproved by FDA. It basically binds with the androgen receptor instead of estrogen which makes it effective in increasing endurance for athletes. According to history, this was the secret of winning for the gold medalist Marion Jones, a sprinter athlete. However, longer association with this type of steroid can lead to infertility in both male and female. Using the steroids abuse test kit, a person may be held liable for a positive THG steroid test.