Blood doping

Blood doping is a way athletes try to improve their performance by increasing the number of red blood cells in their bodies. Red blood cells carry oxygen from the lungs to the muscles, which helps athletes go longer and work harder. By having more of these cells, an athlete might feel they can last longer during a race or sport.

There are a few ways someone can do blood doping. One way is by using special drugs that make the body make more red blood cells. Another way is through blood transfusions, where blood from another person or even the same person is put back into the body. Some might also use special liquids made to act like blood.

Many sports rules say blood doping is not allowed because it gives some athletes an unfair advantage. Groups that watch over sports use special tests on blood samples to try and find out if someone has been using these methods to improve their performance.

History

Blood doping means using special products and methods to help the body carry more oxygen to the muscles during exercise. This can make an athlete perform better. Some products and methods used for this purpose include erythropoietin (EPO), darbepoetin-alfa, and hypoxia-inducible factor (HIF) stabilizers.

The body needs oxygen to work hard, especially during exercise. The amount of oxygen a person can use depends on a few things, like how much blood is pumped and how much oxygen the blood can carry. During competitions, it’s hard to change how much blood is pumped. So, the best way to improve performance is to increase the amount of a substance in the blood called hemoglobin, which helps carry oxygen. More hemoglobin means more oxygen can reach the muscles.

Methods

Many ways to boost the number of red blood cells in the body help athletes perform better. These ways include using special drugs, giving blood from another person or the same person at a different time, and using special liquids that act like blood.

One common way is using a drug called Erythropoietin (EPO). This drug was made to help people who cannot make enough of their own red blood cells, like those with certain health problems. It helps the body make more red blood cells, which carry oxygen to muscles. However, some athletes use it to improve their performance, even though it is not allowed.

Another method is giving blood from one person to another. This can be done by taking blood from an athlete, storing it, and giving it back before a big competition. This also helps increase the number of red blood cells in the body.

There are also special liquids made to act like blood. These liquids can carry oxygen and help athletes, but they have risks and are not allowed for regular use. Another method uses a substance called cobalt chloride which can trick the body into making more red blood cells, though this is also not allowed and can be dangerous.

Detection of blood doping

In 2004, scientists developed a way to find out if athletes used blood doping by checking if blood from another person was in their body. They look at tiny marks on blood cells to see if more than one person’s blood is present.

There are also ways to detect special oxygen-carrying liquids and certain metals that athletes might use to boost their performance, but some of these methods can be difficult or uncomfortable for the athletes.

Military use

In 1947, military scientists began studying ways to help fighter pilots stay stronger at high altitudes. They gave extra red blood cells to ten men, which helped them carry more oxygen.

Later, in 1993, U.S. Special Forces began testing a method called blood loading. Soldiers would give some of their blood, which was stored cold. Before a mission, a small amount of these red blood cells was given back to boost their energy and alertness. In 1998, Australian Defence Forces also approved this method for their Special Air Service Regiment. They chose only a few safe ways to help performance, including caffeine and energy drinks, along with blood-loading.

Notable blood doping cases

Blood doping began in the late 1960s and was made illegal in 1986. It was often used by runners and cyclists to improve their performance. One early example was at the 1980 Summer Olympics in Moscow, where Kaarlo Maaninka received extra blood before winning medals. Cyclist Joop Zoetemelk said he got blood during the 1976 Tour de France to help with a health issue, not to improve performance. Over the years, many athletes were found using blood doping, including cyclists like Tyler Hamilton and Lance Armstrong, who later admitted to using banned methods to boost their performance.

Adverse effects

Increasing the number of red blood cells in the blood can make it thicker and slower to flow. This can reduce the amount of oxygen that reaches the body’s parts and raise the risk of serious health problems like heart attacks and strokes. Too much thickening of the blood can also block blood vessels.

There is also a risk that the blood used in these procedures can become unsafe, which can cause infections in the body. Some medicines used to boost red blood cells can also harm the liver and cause other health issues.