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Open Access Research

Nutritional profile of Indian vegetarian diets – the Indian Migration Study (IMS)

Krithiga Shridhar1*, Preet Kaur Dhillon1, Liza Bowen2, Sanjay Kinra2, Ankalmadugu Venkatsubbareddy Bharathi3, Dorairaj Prabhakaran4, Kolli Srinath Reddy5 and Shah Ebrahim12

Author Affiliations

1 South Asia Network of Chronic Disease, Public Health Foundation of India, Building 47, Sector 44 Gurgaon, New Delhi, Haryana 122002, India

2 London School of Hygiene and Tropical Medicine, London, UK

3 Chief Nutritionist Just Right Obesity Clinic, Bangalore, India

4 Centre for Chronic Disease Control, New Delhi, India

5 Public Health Foundation of India, New Delhi, India

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Nutrition Journal 2014, 13:55  doi:10.1186/1475-2891-13-55

Published: 4 June 2014

Abstract

Background

The cardiovascular and other health benefits and potential harms of protein and micronutrient deficiency of vegetarian diets continue to be debated.

Methods

Study participants included urban migrants, their rural siblings and urban residents (n = 6555, mean age - 40.9 yrs) of the Indian Migration Study from Lucknow, Nagpur, Hyderabad and Bangalore. Information on diet (validated interviewer-administered semi-quantitative food frequency questionnaire), tobacco, alcohol, physical activity, medical histories, as well as blood pressure, fasting blood and anthropometric measurements were collected. Nutrient databases were used to calculate nutrient content of regional recipes. Vegetarians ate no eggs, fish, poultry and meat. Using multivariate linear regression with robust standard error model, we compared the macro- and micro-nutrient profile of vegetarian and non-vegetarian diets.

Results

Vegetarians, (32.8% of the population), consumed greater amounts of legumes, vegetables, roots and tubers, dairy and sugar, while non-vegetarians had a greater intake of cereals, fruits, spices, salt (p < 0.01), fats and oils. Vegetarians had a higher socioeconomic status, and were less likely to smoke, drink alcohol (p < 0.0001) and engage in less physical activity (p = 0.04). On multivariate analysis, vegetarians consumed more carbohydrates (β = 7.0 g/day (95% CI: 9.9 to 4.0), p < 0.0001), vitamin C (β = 8.7 mg/day (95% CI: 4.3 to13.0), p < 0.0001) and folate (β = 8.0 mcg/day (95% CI: 3.3 to 12.7), p = 0.001) and lower levels of fat (β = −1.6 g/day (95% CI: −0.62 to −2.7), p = 0.002), protein (β = −6.4 g/day (95% CI: −5.8 to −7.0), p < 0.0001), vitamin B12 (β = −1.4 mcg/day (95% CI: −1.2 to −1.5), p < 0.0001) and zinc (β = −0.6 mg/day (95% CI: −0.4 to −0.7), p < 0.0001).

Conclusion

Overall, Indian vegetarian diets were found to be adequate to sustain nutritional demands according to recommended dietary allowances with less fat. Lower vitamin B12 bio-availability remains a concern and requires exploration of acceptable dietary sources for vegetarians.

Keywords:
India; Diet; Nutrition; Vegetarian; Vitamin B12