High blood pressure or hypertension is caused by poor diet, drinking too much alcohol and obesity. It can be reduced by losing weight, improving ones diet, taking exercise and drinking moderate amounts of alcohol. Hypertension is believed to be the single most common contributor to early death in adults worldwide as it causes heart and kidney disease. It is estimated that 1 billion people suffer from high blood pressure and that the number of sufferers is forecast to increase further still both in developed and developing countries.

Question: One billion people will die worldwide from high blood pressure.
Options:
A. true, B. false, C. uncertain
Answer: "C"