This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and Health, Subject name: Social & Preventive Medicine
Iodine comes in iodine salt. Requirement in humans - 
Select and explain. 
A. 5 PPM, B. 15 PPM, C. 25 PPM, D. 35 PPM
B: 15 PPM
Answer: B: 15 PPM 
Explanation: Ans. is 'b' i.e., 15 PPM o At consumer level - 15 PPMo At production level -30 PPMGoitre controlo There are following essential components of national goitre control programme.Iodized saltThe iodization of salt is now the most widely used prophylactic public health measure against endemic goitre.In India the level of iodization is fixed under the Prevention of food adulteration (PFA) act and is not less than 30 ppm at the production point and not less than 15 ppm of iodine at the consumer levelIodized salt is most economical, convenient and effective means of mass prophylaxis in endemic areas.Recently the National institure of Nutrition at Hyderabad has come out with a new product, common salt fortified with iron and iodine - tnfo in one salt (twin fortified salt or double fortified salt).Iodized oil - It is another effective method for controlling goitre. IM injection of iodized oil (mostly poppy seed oil) is given. An average dose of 1 ml will provide protection for 4 years.Iodine monitoringNeonatal hypothyroidism is a sensitive pointer to environmental iodine deficiency and can thus be an effective indicator for monitoring the impact of a programme.Manpower trainingMass communication"The WHO regional strategy for the control of IDD has its principal objective the reduction of prevalence of goitre in areas of endemicity to 10% or below by the year 2000".