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.
A: The operation to reverse a vasectomy is much more complicated than the original vasectomy. It requires a general anesthetic and can take four to five hours. The simplest technique is to reconnect the two ends of the vas. The diameter of the vas is about 300 microns, just three times the diameter of a human hair.