For decades, thousands of farmers in tropical hot spots around the world have suffered from a disease that destroys their kidneys. Their eyes can become yellow, their bodies swollen and their muscles continuously cramping as their kidneys become irreversibly damaged — until they die.

These are some of the end-stage symptoms of chronic kidney disease, known as CKD, a painful disease typically resulting from severe hypertension or diabetes, the most common causes of the condition worldwide.

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