Cancer develops when cells in the body grow and divide uncontrollably, due to mutations (mistakes) in cell DNA. Recent insights into the causes of cancer and how cancer cells develop in the body indicate that the uncontrolled growth of cancer cells results from different factors and an accumulation of abnormalities that affect many of the regulatory mechanisms of the cell, such as: Together, this accumulation of cell abnormalities indicates malignancy at the cellular level.  A defining feature of cancer is the rapid creation of abnormal cells that grow beyond their usual boundaries, making it possible to invade adjoining areas, and to spread to other organs in the body, a process called metastasis.  The development of cancer. A fundamental feature of

Since ancient times people have tried to solve the puzzle of hair turning grey as one gets older.  Clay tablets from the ancient Assyrian Empire from 7th century B.C. have included medical texts, written in cuneiform, which describes how to darken prematurely grey hair by applying various mixtures of ingredients that included leek seeds, poppyseeds, cypress oil, pine gum, and the head of a black raven or gall from a black ox.  This had to be applied for days at a time. Scientists still continue to look for ways to reverse the graying process, but with little success so far.   Hair greying is a visible sign of aging and popular belief has it that stress would hasten this process, but