This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Obstetrics, Paediatrics and Geriatrics, Subject name: Social & Preventive Medicine
Pregnant and lactating mothers need_____ mg of dietary calcium per day 
Select and explain. 
A. 400 mg, B. 600 mg, C. 800 mg, D. 1000 mg
D: 1000 mg
Answer: D: 1000 mg 
Explanation: Ans. d (1000 mg) (Ref. Park Textbook of PSM 22nd/pg.590; table 29)PREGNANCYLACTATION# Extra calories - 300,# Extra calories - 550 (0 to 6 months) 400 (6 to 12 months),# Extra proteins - 15 g,# Extra proteins - 25 gm (0 to 6 months) 18 gm (6 to 12 months),# Calcium 1000 mg/day,# Calcium 1000 mg/day, iron - 30 mg/day,# Iron - 38 mg/day,# Folic acid - 150 mg/day.# Folic acid - 400 mg/day.