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‘Millet-based diet can lower risk of type 2 diabetes’


A new study has shown that eating millets reduces the risk of developing type 2 diabetes and helps to manage blood glucose levels in people with diabetes. The study indicates the potential to design appropriate meals with millets for diabetic and pre-diabetic people as well as for non-diabetic people as a preventive approach.

Drawing on research from 11 countries, the study, published in Frontiers in Nutrition, shows that diabetic people who consumed millets as part of their daily diet saw their blood glucose levels drop 12 to 15 per cent (fasting and post-meal), and blood glucose levels went from diabetic to pre-diabetes levels.

The HbA1c (blood glucose bound to hemoglobin) levels lowered on average 17 per cent for pre-diabetic individuals, and the levels went from prediabetic to normal status. These findings affirm that eating millets can lead to a better glycemic response.

The authors reviewed 80 published studies of which 65 were eligible for a meta-analysis involving about 1,000 human subjects, making this analysis the largest systematic review on the topic till date, said International Crops Research Institute for the Semi-Arid Tropics (ICRISAT).

“No one knew there were so many scientific studies undertaken on millets’ effect on diabetes. These benefits were often contested, and this systematic review of the studies published in scientific journals has proven that millets keep blood glucose levels in check, reducing the risk of diabetes, and has shown just how well these smart foods do it,” said Dr. S Anitha, the study’s lead author and a senior nutrition scientist at International Crops Research Institute for the Semi-Arid Tropics (ICRISAT).

“Diabetes contributed to a very high disease burden from 1990 to 2016 in India. Diabetes-related health expenditure was over $7 million. There is no easy solution, and it requires a lifestyle change, and diet is a very important part of this. This study provides one part of the solution useful for individuals and governments. How we use this and implement it into programs needs careful planning,” said Hemalatha, Director, National Institute of Nutrition (NIN).

Raj Bhandari, one of the study’s authors and a representative on the Indian National Technical Board of Nutrition, noted that additional attention to health has been accelerated due to COVID-19 and diabetics are even more vulnerable to the virus. “Our diets play a critical role and if we could bring millets back as a major part of our diet, we would not only help in controlling diabetes, but we would also be adding important nutrients to our plate.”

According to the International Diabetes Association, diabetes is increasing in all regions of the world. India, China and the U.S.A. have the highest numbers of people with diabetes. Africa has the largest forecasted increase of 143 per cent from 2019 to 2045, the Middle East and North Africa, 96 per cent and South East Asia, 74 per cent. The authors urge the diversification of staples with millets to keep diabetes in check, especially across Asia and Africa.

Strengthening the case for returning millets as staples, the study found that millets have a low average glycemic index (GI) of 52.7, about 30 per cent lower glycemic index (GI) than milled rice and refined wheat, and about 14 to 37 GI points lower compared to maize.

All 11 types of millets studied were either low or medium GI, GI being an indicator of how much and how soon a food increases blood sugar level. The review concluded that even after boiling, baking and steaming (most common ways of cooking grains) millets had lower GI than rice, wheat and maize.

“Millets are traditional foods consumed in India. Use of locally available millets as dietary diversification coupled with good lifestyle modifications would help reduce not only Type II diabetes but also gestational diabetes,” said study co-author Professor Kowsalya Subramaniam, (Food and Science Nutrition), Registrar at Avinashilingam Institute for Home Science and Higher Education for Women in Tamil Nadu.

“The global health crisis of under-nutrition and over-nutrition coexisting is a sign that our food systems need fixing. Greater diversity both on-farm and on-plate is the key to transforming food systems. On-farm diversity is a risk mitigating strategy for farmers in the face of climate change while on-plate diversity helps counter lifestyle diseases such as diabetes. Millets are part of the solution to mitigate the challenges associated with malnutrition, human health, natural resource degradation, and climate change. Trans-disciplinary research involving multiple stakeholders is required to create resilient, sustainable and nutritious food systems,” said Dr. Jacqueline Hughes, Director General ICRISAT.

This study is first in a series of studies that has been worked on for the last four years as a part of the Smart Food initiative led by ICRISAT that will be progressively released in 2021. Included are systematic reviews with meta-analyses of the impacts of millets on diabetes, anaemia and iron requirements, cholesterol and cardiovascular diseases and calcium deficiencies as well as a review on zinc levels.

As part of this, ICRISAT and the Institute for Food Nutrition and Health at the University of Reading have formed a strategic partnership to research and promote the Smart Food vision of making diets healthier, more sustainable on the environment and good for those who produce it, explained Joanna Kane-Potaka, a co-author from ICRISAT and Executive Director of the Smart Food initiative.



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