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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).
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.