This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
All the following are the beneficial effects of oral contraceptive pills, EXCEPT: 
Select and explain. 
A. Decreased risk of ectopics, B. Prevention of atherogenesis, C. Decreased BP, D. Increase in bone density
C: Decreased BP
Answer: C: Decreased BP 
Explanation: Estrogen causes increased hepatic synthesis of a variety of globulins. Increase in angiotensinogen production which seems to be dose related and its conversion by renin to angiotensin is suspected to be associated with 'pill induced hypeension'. So OCPs causes hypeension not decreased BP. Ref: Williams Gynecology, Page 249, Table 5-6