Your age (<span>cancer can take decades to develop and that's why most people diagnosed with cancer are 65 or older)</span>, habits (smoking, drinking more than one alcoholic drink a day), family history (<span>it's possible that mutations are being passed from one generation to the next)</span>, your health conditions (<span>some chronic health conditions, such as ulcerative colitis, can markedly increase your risk of developing certain cancers) and your environment (</span><span>environment around you may contain harmful chemicals that can increase your risk of cancer).</span>
Tobacco, sunlight, ionizing radiation, some chemicals, some viruses and bacteria, some hormones, genetic predisposition, poor diet, and lack of exercise are all possible risk factors for cancer.
Answer: I believe that it is not safe because if you were to say crush it up and snort it and you thought that is wasn't working so you did another and then maybe another then you might be taking more then what you where supposed to take in one setting.