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Three scientists who discovered how cells sense and adapt to oxygen levels have won the 2019 Nobel Prize for physiology or medicine, BBC reports.
The award was shared by Britain's Sir Peter Ratcliffe and two Americans, William Kaelin and Gregg Semenza.
Their findings affect our day-to-day life from exercise, to being at high altitudes to our early development in the womb.
Their work is leading to new treatments for anaemia and even cancer.
The Swedish Academy said: "The fundamental importance of oxygen has been understood for centuries, but how cells adapt to changes in levels of oxygen has long been unknown."
Sir Peter Ratcliffe is based at the Francis Crick Institute and the University of Oxford in the UK, William Kaelin at Harvard in the US and Gregg Semenza at Johns Hopkins University in the US.
Oxygen
Oxygen is in every breath we take, our bodies are completely dependent on it for converting food into usable energy.
But oxygen levels vary in the body, particularly during exercise or at high altitude or after a cut or wound disrupts the blood supply.
When oxygen levels drop cells are forced to rapidly adapt their metabolism.
The oxygen-sensing ability of the body can trigger the production of new red blood cells or the construction of new blood vessels.
It also has a role in the immune system and the earliest stages of our development inside the womb.
Understanding the role of the body's oxygen-sensing abilities is leading to ideas for new treatments.
In cancer, tumours can hi-jack the process to create new blood vessels and make it easier for the cancer to grow.
Telling the body to make more red blood cells could also be an effective treatment for anaemia.
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