Genetic & Blood Disorders

Glucose-6-Phosphate Dehydrogenase (G6PD) Deficiency

Last reviewed: October 2026

An inherited condition, common in parts of Africa, in which red blood cells can break down after certain infections, medicines (including some antimalarials) or eating fava beans. In the US it affects about 1 in 10 African American men.

Warning Signs

Paleness and tiredness during an episode
Dark urine
Yellowing of the skin or eyes
Shortness of breath or a fast heartbeat

Prevention Tips

Know your G6PD status if you're at risk
Avoid trigger medicines and fava beans
Tell every healthcare provider about your diagnosis

Where to get checked or find care for glucose-6-phosphate dehydrogenase (G6PD) deficiency in your country.

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Sources

Glucose-6-phosphate dehydrogenase deficiency — MedlinePlus Genetics, NIH

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Medical disclaimer: This information is for education and community awareness only. It is not medical advice, diagnosis or treatment. Always talk to a qualified healthcare provider about your health, and call emergency services if you think someone needs urgent help.