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Thalassemia is a genetic blood disorder that is associated with a reduction in haemoglobin in red blood cells and, subsequently, insufficient oxygen reaching cells in the body. However, stanton in lipitor individuals with this condition may actually be at an advantage when it comes to certain diseases, such as malaria, as it may offer a protective effect.

Protection from Malaria

Malaria is a potentially lethal condition that is common in areas with a tropical or subtropical climate, where the prevalence of thalassemia is similarly high.

Some research has suggested that people with thalassemia are less likely to suffer from malaria, due to a protective effect of the condition. It appears that smaller quantities of haemoglobin in more cells – a distinctive characteristic of thalassemia – may offer an advantage against malaria.

According to the research, children with mild alpha-thalassemia have a natural protection against the anemia associated with malaria. The study was conducted in Papua New Guinea and included 800 children as participants in the study. In this region, malaria is endemic and a high percentage of children also have alpha-thalassemia.

For severe cases of malaria, an individual can lose 30-50% of total red blood cells and lead to anemia in the blood. However, children with alpha-thalassemia tended to recover more easily after experiencing a malaria attack.

Although the reason for this is not certain, it is thought to occur as a result of the increased number of red blood cells present in children with thalassemia. They typically possess 10-20% more red blood cells than individuals without thalassemia and, thus, a reduction in number is less likely to cause serious damage.

This unusual benefit of thalassemia is a simple consequence of the body’s response to the reduction in haemoglobin in the blood. Their body produces more cells to compensate, which then offer a protective effect against another disease that is also prevalent in the same region.

Given the significant impact of malaria, particularly on global mortality of children, this benefit of thalassemia is notable. Up to two million deaths occur every year in Africa and Asia due to malaria and in many of these regions genetic mutations have arisen, offering a form of protection.

The potentially beneficial effect of other types of thalassemia, such as beta-thalassemia, has not yet been established. However, it is possible that there are similar protective effects against malaria in other types of thalassemia.

References

  • http://www.nlm.nih.gov/medlineplus/ency/article/000587.htm
  • https://www.news-medical.net/news/2008/03/18/36364.aspx
  • http://www.med.nyu.edu
  • http://www.mayoclinic.org/diseases-conditions/thalassemia/basics/definition/con-20030316

Further Reading

  • All Thalassemia Content
  • What is Thalassemia?
  • Thalassemia Genetic Prevalence
  • Thalassemia Prevalence
  • Thalassemia Pathophysiology
More…

Last Updated: Aug 23, 2018

Written by

Yolanda Smith

Yolanda graduated with a Bachelor of Pharmacy at the University of South Australia and has experience working in both Australia and Italy. She is passionate about how medicine, diet and lifestyle affect our health and enjoys helping people understand this. In her spare time she loves to explore the world and learn about new cultures and languages.

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