Medicine and Healthcare. Black stools can be due to iron supplements or excess iron in the diet. The most serious cause of black stools is bleeding in the GI tract, due to ulcers or some other cause. If the stool is black due to blood, it usually has a tarry feel. If there is just a black color, most likely it is not blood.
Yes, but most doctors will not do it that early. Yes, a vasectomy can be performed on an 18 year old, depending on the circumstances. Yes, a vasectomy can be performed on an 18 year old, depending on the circumstances. 1 year ago by Stephen F. Shaban, MD.
== Answer == There are a few cases where the vasectomy was not done properly and the male would not know for sure. It happened to a girlfriend of mine. Her husband got a vasectomy and they thought all was well and 3 months later she was pregnant. He had to have the vasectomy done again and this time properly.