How do college athletes increase body mass in short time?

A few college sportspersons are caught using banned medicines. Does it mean that they don’t take performance-enhancing drugs? Less than 1% of college football players have been caught violating anti-doping rules. They have tested positive for anabolic steroids and/or other doping products. Such situation must convince anti-doping agencies that they win in the fight against doping. But some suspicions appear. It is believed that numerous college football players administer steroids and/or other related products but they avoid detection successfully.
Why do such suspicions appear? Changes in physique of college football players cause controversial points of view. So, changes in body weight of over 61,000 college football players were recently analyzed by the Associated Press. Results showed that numerous college football players increased their body weight in short period of time evidentially. More than 20 pounds were obtained by more than 4,500 college football players during a year. Furthermore, circa 100 individuals enhanced the body weight by over 80 pounds during a year. As you see, the gains were essential.
Several specialists claim that these aspects should not trouble anti-doping officials. They affirm that anti-doping officials shouldn’t subject college football players to drug tests just because they have enhanced body mass essentially.
But other specialists have another point of view. However they agree that it is impossible to affirm that several football players have administered steroids and/or other related drugs, basing only on changes in body weight, they notice that the changes may be a factor that leads to suspicions linked with intake of steroids. So, such individuals that have increased body weight in short period of time should be subjected to steroid testing.
Some college athletes that increased body weight significantly in short period of time were asked about their changes. The athletes claimed that they had never applied any forbidden products. They claimed that they reached such dramatic changes naturally. The college athletes noted that they had consumed much food for this purpose. So, they assured that such great results were reached by them because of appropriate diets. According to them, it was not difficult to get many pounds in short period of time.