1.   It takes a relatively modest amount of scientific evidence to have a substance banned.

2.   All these substances are banned in the sport but believed to be used by some riders.

3.   A Revamping of the drug policy to include marijuana, amphetamines and barbiturates as banned substances.

4.   Chile banned the substance in July, long after other countries did.

5.   Instead, it bans all substances similar to the specifically prohibited drugs.

6.   Professional baseball, unlike other sports, has not banned this substance.

7.   Speaking as someone from the Players Association, I know the teams themselves really frown upon the use of steroids and banned substances.

8.   The IOC does not ban these substances if needed for medical treatment.

9.   The NCAA is deciding whether to ban the substance.

10.   They have long argued that the clause is outdated and that the public can be adequately protected against cancer without flatly banning these substances.