The supply of organs for people that need them through organ donation is not enough to satisfy the demand. Some people go to foreign countries like Poland, Thailand or India to buy an organ.
Some organs can only be donated from a deceased person. Others come from living people like kidneys and bone marrow.
Some day, all organs will be synthetic but not yet.
This is a simple guide about organ donation-transplantation.
Organ transplant is the process of replacing diseased organs with healthy ones. After that, the patient must take anti-reaction drugs for life.
You can donate a few organs and still keep the body intact for a funeral or you can donate the body completely. You receive no pay although some places now are buying people's bodies in advance for when they die.