 The researchers said approximately 18 percent of participants in their study (which included 5,527 males) were "extremely concerned for their weight and researchers found 7.6 percent of young males were "very concerned about muscularity" and were using techniques that could be harmful to obtain an ideal body.A study by insurer Blue Cross Blue shield found that in 1999 to 2000, use of steroids and similar drugs amongst boys ages 12 to 17 jumped 25 percent, with 20 percent saying they use the drug for looks rather than sports.Moreover, men in advertisements are more muscular today than they were 25 to 30 years ago.