Today, my brother and I share almost identical DNA, the result of a successful bone marrow transplant I had last April using his healthy stem cells. But Adam and I couldn't be more different.
It felt like 10 years, but I was actually in treatment for three-and-a-half years. I finally finished in April. Two years ago, I had a bone marrow transplant from my brother, which saved my life, so I feel really grateful.
Using adult stem cells drawn from bone marrow and umbilical cord blood system cells, scientists have discovered new treatments for scores of diseases and conditions such as Parkinson's disease, juvenile diabetes, and spinal cord injuries.
Soon enough I would learn the specific diagnosis: myelodysplastic syndrome, a disorder of the bone marrow. In my case, the disease growing inside me had morphed into acute myeloid leukemia. I would need intensive chemotherapy and a bone marrow transplant to save my life.
The thought of going through a bone marrow transplant, which in my case called for a life-threatening dose of chemotherapy followed by a total replacement of my body's bone marrow, was scary enough. But then I learned that finding a donor can be the scariest part of all.
Just a few years ago, at the age of 22, I learned I had an aggressive form of leukemia. I needed intensive chemotherapy and a bone marrow transplant to save my life. Back then, my doctors told me that I had a 35 percent chance of surviving my transplant.
One of the first papers I wrote at the University of Wisconsin, in 1977, was on stem cells. I realized that if I changed the environment that these cells were in, I could turn the cells into bone, and if I changed the environment a bit more, they would form fat cells.
Every year, nearly two-thirds of the approximately 200,000 patients in need of a bone marrow transplant will not find a marrow donor that matches within their families.
Both in Britain and America, huge publicity has been given to stem cells, particularly embryonic stem cells, and the potential they offer. Of course, the study of stem cells is one of the most exciting areas in biology, but I think it is unlikely that embryonic stem cells are likely to be useful in healthcare for a long time.
There's a photograph of me in the transplant unit where I have a vomit bucket under one arm, I have my laptop on my knees, and I'm crying, not because, you know, I'm about to have a bone marrow transplant, but because I've missed a deadline!
I have always loved kids. They are little adults with so much personality, and it is fun to work with that. Whether that means donating school supplies or medication, or [using my celebrity] to get them a bone marrow transplant, I want to help.
I have always loved kids. They are little adults with so much personality, and it is fun to work with that. Whether that means donating school supplies or medication, or using my celebrity status to get them a bone marrow transplant, I want to help.
So why in the world would anyone support the unethical, failed use of embryonic stem cells instead of the ethical, successful use of adult stem cells? Because they do not know the difference.
The good news is we are seeing an incredible surge in non-animal technologies in laboratories. With researchers using stem cells, visually impaired people may one day have new corneas and lenses grown from their own cells. That is likely to be a more effective and cheaper approach than using animals.
Well, there are two kinds of stem cells: adult stem cells, which you can get from any part of a grown body, and embryonic stem cells. These are the inner- core of days-old embryos that can develop into any kind of cell.
I've been fortunate to be treated by excellent doctors at world-class hospitals. In the last year alone, my insurance has covered over a million dollars in medical expenses, including a bone marrow transplant and 10 hospitalizations amounting to a combined five months of inpatient care.
The bone marrow transplant procedure itself can be dangerous, but it is swift, which makes it feel strangely anti-climactic.