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Prostate-specific antigen (PSA) is a serine protease and one of the most abundant proteins secreted by the human prostate epithelium. PSA is used as a well-established marker of prostate cancer. The involvement of PSA in several early events leading to the development of malignant prostate tumors has made it a target for prevention and intervention. It is thought that PSA cleaves insulin-like growth factor binding protein-3 (IGFBP-3), providing increased local levels of IGF-1, leading to tumor growth. Separately, there are data that suggest an enzymatic regulatory role for dietary boron, which is a serine protease inhibitor. In this study we...

Researchers may have found an easy way to detect lung cancer in its early or even pre-cancerous stages, as well as a way to reverse the start of the deadly disease with a readily available, over-the-counter drug. "It's incredibly, incredibly exciting," said Dr. Patrick Nana-Sinkam, a lung cancer expert with the Ohio State University Comprehensive Cancer Center, who was not involved with the new study. "This definitely has potential." The minimally invasive procedure involves using a small brush to collect a smattering of cells from the windpipe (a bronchoscopy), explained study co-author Andrea Bild, an assistant professor of pharmacology and...

(NaturalNews) Smoking cigarettes and reading Natural News are two very incompatible notions. But Natural News readers are people after all, and thus not totally perfect. Besides, even the most fastidious raw foodist probably knows or even loves someone who occasionally takes a puff. For them, research on a substance that appears to reverse the health harming effects of smoking may have the ring of good news. Inositol, a compound found in many foods, seems to stop the threat of lung cancer from cigarettes dead in its tracks.