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Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

