Community Medicine
Nutrition
Community medicine nutrition for MBBS: BMI and anthropometry, PEM, iron, iodine and vitamin A deficiency, ICDS, food fortification and safety, mapped to NMC codes CM5.1 to CM5.8.
MedNext Academy | 3 min read
Nutrition
Community medicine nutrition for MBBS: BMI and anthropometry, PEM, iron, iodine and vitamin A deficiency, ICDS, food fortification and safety, mapped to NMC codes CM5.1 to CM5.8.
This chapter covers nutritional requirements across the life cycle, the assessment of nutritional status and the major deficiency disorders of protein, iron, iodine and vitamin A. It links these to India's national nutrition programmes, food fortification and the regulation of food safety and adulteration.
High-yield: Nutrition
- The body mass index is weight in kilograms divided by height in metres squared, with the Asian cut-off for overweight starting at 23 and obesity at 25.
- Protein energy malnutrition includes marasmus, marked by severe wasting, and kwashiorkor, marked by oedema, and marasmic-kwashiorkor combines both.
- Vitamin A deficiency is the leading preventable cause of childhood blindness, and Bitot spots are an early clinical sign.
- The vitamin A prophylaxis programme gives a first dose at nine months with measles vaccine and further doses every six months up to five years.
- Iron deficiency is the commonest cause of nutritional anaemia, and the Anaemia Mukt Bharat strategy delivers weekly iron and folic acid supplementation.
- Iodine deficiency causes goitre and cretinism, and the National Iodine Deficiency Disorders Control Programme mandates iodised salt with at least 15 parts per million at consumer level.
- Nutritional status is assessed by anthropometry, and weight for age, height for age and weight for height define underweight, stunting and wasting.
- Mid-upper arm circumference below 11.5 centimetres in children aged six months to five years indicates severe acute malnutrition.
- The Integrated Child Development Services scheme provides supplementary nutrition, immunisation and preschool education through anganwadi centres.
- The Mid-Day Meal scheme, now PM POSHAN, supplies a cooked meal to school children to improve nutrition and school attendance.
- Food fortification adds micronutrients to staples, such as iodine in salt and iron and folic acid in wheat flour, to combat hidden hunger.
- Food adulteration is controlled under the Food Safety and Standards Act, and the FSSAI is the national regulatory authority.
- A balanced diet for an adult provides carbohydrate, protein and fat in a roughly 60, 20 and 20 percent energy split, adjusted for activity.
- Cereals and pulses combined give a better amino acid profile through mutual supplementation, important in vegetarian Indian diets.
Major micronutrient deficiencies
- **Vitamin A:** Leading cause of preventable childhood blindness. Bitot spots and night blindness are early signs; prophylaxis from nine months of age.
- **Iron:** Commonest nutritional anaemia. Addressed by weekly iron and folic acid supplementation under Anaemia Mukt Bharat.
- **Iodine:** Causes goitre and cretinism. Controlled by universal salt iodisation, minimum 15 ppm at consumer level.
- **Protein energy:** Marasmus (wasting) and kwashiorkor (oedema). MUAC below 11.5 cm flags severe acute malnutrition.
NMC competencies in this chapter
- **CM5.1:** Sources of nutrients and requirements by age, sex and activity
- **CM5.2:** Nutritional assessment of individuals, families and the community
- **CM5.3:** Nutrition-related disorders including PEM and micronutrient deficiencies
- **CM5.4:** Planning a suitable diet based on local food availability
- **CM5.6:** National Nutrition Policy and programmes including ICDS
- **CM5.7:** Food hygiene
- **CM5.8:** Food fortification, additives and adulteration
Frequently Asked Questions
How is severe acute malnutrition identified in the field?
In children aged six months to five years, a mid-upper arm circumference below 11.5 centimetres, bilateral pitting oedema, or a weight for height below minus three standard deviations indicates severe acute malnutrition requiring urgent management.
What does the vitamin A prophylaxis schedule involve?
The first dose is given at nine months along with measles vaccine, with subsequent doses every six months until the child is five years old, to prevent deficiency and childhood blindness.
Which national programme delivers supplementary nutrition to under-fives?
The Integrated Child Development Services scheme delivers supplementary nutrition, immunisation, health check-ups and preschool education through the anganwadi centre network.
How does India tackle iodine deficiency?
Through the National Iodine Deficiency Disorders Control Programme, which promotes universal consumption of iodised salt containing at least 15 parts per million of iodine at the consumer level.
Continue reading
MBBSAll Community Medicine chapters
Continue through the Community Medicine chapter map.
Continue studying Community Medicine
Explore clinician-written learning resources, structured revision and practice across the MedNext platform.
Open in the MedNext appSee plans