When New Blood Begins

Dr. E. Donnall Thomas spent decades developing bone marrow transplantation, work that earned him the Nobel Prize in 1990. What his research revealed remains one of medicine's most stunning portraits of hope.

After chemotherapy destroys a patient's diseased marrow, donor stem cells are infused into the bloodstream. Then comes what oncologists call the nadir — the absolute lowest point. Blood counts plummet. The immune system essentially vanishes. The patient is more vulnerable than at any other moment in the entire process.

But the nadir is not the end. It is the necessary passage to new life.

What follows is called engraftment — the moment transplanted stem cells navigate through the bloodstream, find the hollowed-out bone marrow, anchor themselves there, and begin producing fresh, healthy blood. New white cells appear. Platelet counts climb. A body that looked like it was dying begins rebuilding itself from the inside out.

Hope works this way in the life of faith. There are seasons when everything that sustained us seems stripped away — health, certainty, the relationships we counted on. We reach our own nadir and wonder if God has forgotten. But the Psalmist knew this valley: "Why, my soul, are you downcast? Put your hope in God" (Psalm 42:5).

The lowest point is not the final point. God does His deepest work when we feel most empty — anchoring something new within us, preparing us to carry life we never could have produced on our own.