Healthy Lifestyle

Sickle cell disease is a blood disorder due to a single genetic mutation. It remains in populations because the mutation has a flip side--it helps to protect against malaria. Now another mutation has been shown to afford similar protection. Deficiency in the enzyme glucose-6-phosphate-dehydrogenase, known as G6PD deficiency, leads to anemia and jaundice. The condition affects more than 400 million people.Scientists had thought that the...