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Phasing out of the Universal Mega Dose of Vitamin-A Prophylaxis to Avoid Toxicity
Sudip Bhattacharya1, Amarjeet Singh1
1Department of Community Medicine, School of Public Health, PGIMER, Chandigarh, India.
Insights
Vitamin-A (Vit-A) prophylaxis in India showed decreased deficiency signs but mass programs had low coverage and potential harm. A food-based approach with targeted Vit-A supplementation is recommended over "one size fits all" strategies.
Area of Science:
- Public Health Nutrition
- Ophthalmology
- Pediatrics
Background:
- Childhood blindness from corneal ulceration was a significant issue in India.
- A national Vitamin-A (Vit-A) prophylaxis program was initiated in 1970 by the National Institute of Nutrition (NIN).
- While Vit-A deficiency signs decreased, attributing this solely to mass prophylaxis is uncertain due to low and patchy coverage.
Purpose of the Study:
- To evaluate the effectiveness and potential harms of mass Vitamin-A prophylaxis in Indian children.
- To explore alternative and complementary strategies for addressing Vitamin-A deficiency.
- To advocate for a more targeted and resource-efficient approach to Vitamin-A supplementation.
Main Methods:
- Review of documented data on Vitamin-A deficiency prevalence and prophylaxis program coverage.
- Analysis of factors contributing to improved nutritional status and reduced deficiency signs.
- Examination of research findings on the adverse effects of high-dose Vitamin-A supplementation.
Main Results:
- Mass Vitamin-A prophylaxis coverage was low and inconsistent.
- Improved nutrition, vaccination, breastfeeding, and healthcare services likely contributed to reduced deficiency.
- High-dose Vit-A supplementation carries risks of acute toxicity and impaired growth in susceptible children.
Conclusions:
- A "one size fits all" mass Vitamin-A prophylaxis approach may be harmful and inefficient.
- A food-based approach, including breastfeeding and Vit-A rich foods, is crucial.
- Targeted supplementation for children with deficiency signs or post-measles is recommended, alongside timely measles vaccination.
Abstract:
Childhood blindness due to corneal ulceration was prevalent among poor Indian children. To tackle this situation, the National Institute of Nutrition (NIN), Hyderabad, India, Vitamin-A (Vit-A) prophylaxis programme was launched nationally in 1970 after field testing. Research of Indian Council for Medical Research (ICMR) documented that prevalence of Vit-A deficiency signs such as Bitot's spot decreased among children, over a period of time. However, this decrease cannot be ascertained is due to mass Vit-A prophylaxis programme. This is because coverage was low and patchy. Improved nutrition status, wider vaccination coverage, increased rate in breast feeding and improvement of healthcare services played a crucial role. Rather many studies revealed that (mass prophylaxis to the child who is having adequate Vit-A level) it may be harmful to certain group of children as a result of acute toxic symptoms. High dose of Vit-A is capable of loss of bone density-hence retarded growth may be observed in susceptible individuals. To tackle this issue food based approach should be promoted (which includes breast feeding) along with timely measles vaccination. The children who have signs of Vit-A deficiency (e.g. night blindness, xeropthalmia, Bitot's spot) or post measles children should receive Vit-A in age specific daily doses for two weeks along with Vit-A rich food, like green leafy vegetables, red palm oil, liver etc. Public spirited citizens, together with scientific community in India, should discourage this "one size fit to all" approach. It will not only avoid the ill effects of high dose of Vit-A but also it will help us optimal utilization of health resources in a resource poor country like India.
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