Anaemia Audit in a Residential School Mess
A residential school in Coimbatore serves 180 girls aged 13–15. A health check finds 68 girls with haemoglobin below 11.5 g/dL. The lunch cycle repeats every week: steamed rice, sambar, spinach poriyal on three days, and a glass of milk at 4 pm. Spinach is chopped fine and simmered for 25 minutes in tamarind water; the poriyal is served with rice at 1 pm. Tea is served at 3:30 pm and again at 6 pm, both with meals or snacks. The only raw vitamin C sources in the week are two small tomato slices in the sambar. The school cook says lemons are available at ₹4 each (about 8 servings per lemon), and sprouted green gram costs ₹6 per 100 g raw. The principal wants a revised plan that does not exceed ₹3 extra per student per day and can be monitored by the hostel warden without a laboratory.
1. Identify the dietary factors most likely reducing iron absorption in this menu, and explain why adding more spinach alone would not solve the problem.
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The menu supplies iron mainly from spinach and pulses, but most of it is non-haem iron, which is poorly absorbed. Three factors work against it:
- Tea tannins: tea at 3:30 pm and 6 pm contains tannins that bind iron. The 6 pm tea is close to the evening meal, so the gap is not protective.
- Low vitamin C at the iron meal: two small tomato slices may provide only 5–8 mg ascorbic acid, while a useful enhancer effect usually needs 25–50 mg at the same meal.
- Calcium and phytate load: milk at 4 pm adds calcium, which competes with iron; rice and dal add phytates. Long simmering of spinach does not remove oxalate, and oxalate also lowers mineral availability.
Adding more spinach raises oxalate and phytate load without enough ascorbic acid. Intake may look better on paper, but absorbed iron may not improve. The fix is to change the meal matrix-enhancers at the meal, inhibitors moved away-not just increase one food.
2. Propose a revised lunch and snack schedule costing no more than ₹3 per student per day, with quantities where possible, and state the expected nutritional improvement.
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Keep the extra cost under ₹3:
- Add 15 mL lemon juice per student (about 1/8 lemon; ₹0.50) to the sambar or poriyal after cooking, not during cooking.
- Serve 30 g raw-weight sprouted green gram sundal (₹1.80) on two days in place of plain poriyal.
- Shift the 3:30 pm tea to 4:30 pm and move milk to 11:00 am, so tea tannins and calcium are not taken within one hour of the iron-rich lunch.
- Continue spinach but cook it for 8–10 minutes, not 25, and add tomato at the end.
Approximate extra cost: ₹0.50 + ₹1.80 = ₹2.30 per student per day, inside the ₹3 limit. Expected improvement: 25–30 mg vitamin C at lunch can increase non-haem iron absorption two- to threefold, and separating tea reduces tannin inhibition. This is a dietary improvement, not a medical cure; the 68 affected girls still need medical review.
3. Design a simple monitoring plan for the warden that does not require a laboratory.
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The warden can monitor process and cost, not clinical outcomes:
- Daily: observe one serving line and tick whether lemon and sprouts are actually served; record tea and milk times; score plate waste for the new items on a 1–5 scale; record lunch attendance.
- Weekly: calculate extra cost per student and compare with the ₹3 limit; check that no tea is served within one hour of lunch.
- Monthly: review the checklist with the cook and correct repeated deviations.
- Quarterly: arrange repeat haemoglobin testing for the 68 girls through a doctor or primary health centre-this is an outcome measure and needs a health professional, not the warden alone.
Keep a simple symptom log for tiredness, but refer any girl with Hb below 11.5 g/dL for medical care. The warden monitors whether the plan is delivered; the health service monitors whether it works.