ANSWERS:

1) b

2) They can be purchased without a prescription;

3) They do not need to demonstrate any proven effects

4) They do not need to be tested before being sold.

5) Prostate Cancer - Hope ("Spes" in Latin)

6) d

7) c

8) A major artery could receive a small tear, allowing a blood clot to enter the bloodstream and cause a stroke

9) Qi (pronounced "chee")

10) a

11) Some "sham" practitioners believed that they "felt something," so they could no longer be regarded as an adequate control group

12) d