This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
Side effects of oral contraceptives are all EXCEPT: 
Select and explain. 
A. Irregular bleeding, B. Headache, C. Thrombosis, D. Increased risk of ovarian cancer
D: Increased risk of ovarian cancer
Answer: D: Increased risk of ovarian cancer 
Explanation: Irregular bleeding or amenorrhoea can occur if oral contraceptives are given continuously. Estrogen can cause headache, thrombosis and endometrial carcinoma. OCP decrease the risk of ovarian cancer (REF.Essentials of Pharmacology TD TRIPATHI 6th EDITION page no 309)