Home ยป Using purgatives on a regular basis is harmful to health. Which deficiency does it cause? Health MCQs Using purgatives on a regular basis is harmful to health. Which deficiency does it cause? February 18, 2022 10 Views Q. Using purgatives on a regular basis is harmful to health. Which deficiency does it cause? A. Potassium B. Iron C. Iodine D. Chromium Answer: Potassium